{
  "tools": {
    "us_401k": {
      "title": "401k and Roth IRA Calculator for US Retirement",
      "desc": "Project your 401(k) and IRA contributions at 2026 IRS limits, with employer match, through to retirement.",
      "anchor": "401k and Roth IRA calculator"
    },
    "w2_1099": {
      "title": "US W-2 vs 1099 Calculator: Employee or Contractor Pay",
      "desc": "Compare net take-home pay between W-2 salary and 1099 freelance rates accounting for FICA, SE Tax, and QBI deductions.",
      "anchor": "US W-2 vs 1099 calculator"
    },
    "tip_splitter": {
      "title": "US Bill Splitter & Tip Calculator: Pre or Post-Tax",
      "desc": "Work out a US restaurant tip (10 to 25%) before or after sales tax, split the bill evenly or dish by dish, then round each share, the tip or the total up to the dollar.",
      "anchor": "US bill splitter"
    },
    "hsa_fsa": {
      "title": "US HSA vs FSA Calculator: Tax Savings on Health Costs",
      "desc": "Enter your contributions and federal and state tax rates to compare the tax savings of an HSA and an FSA.",
      "anchor": "US HSA vs FSA calculator"
    },
    "brrrr_pmi": {
      "title": "US BRRRR Calculator: Refinance Cash-Out and PMI Removal",
      "desc": "Buy, Rehab, Rent, Refinance, Repeat : calculate cash extracted on ARV refinance, net cashflow, and HPA 80% PMI removal.",
      "anchor": "US BRRRR calculator"
    },
    "us_sales_tax": {
      "title": "US Sales Tax Calculator: State and County Rates",
      "desc": "Comprehensive 50-state + county tax rates, grocery/clothing exemptions, and NOMAD state zero-tax lookups.",
      "anchor": "US sales tax calculator"
    },
    "us_energy_credit": {
      "title": "Inflation Reduction Act (IRA) Energy Tax Credit Estimator",
      "desc": "Calculate federal IRS Form 5695 clean energy tax credits for solar, batteries and heat pumps: the 25D and 25C credits ended on January 1, 2026.",
      "anchor": "Energy tax credit estimator"
    },
    "gateway_fees": {
      "title": "Stripe & PayPal Fee Calculator with 1099-K Threshold",
      "desc": "Calculate credit card transaction fees, reverse invoice amounts, and track IRS 1099-K reporting thresholds.",
      "anchor": "Stripe & PayPal fee calculator"
    },
    "golden_hour": {
      "title": "US Golden Hour Calculator: Blue Hour and Sun Path",
      "desc": "Pick a US city and a date to get golden hour, blue hour, sun elevation and shadow length in local time.",
      "anchor": "US golden hour calculator"
    },
    "eu_vat_oss": {
      "title": "EU VAT Calculator: OSS Rates and Reverse Charge",
      "desc": "Calculate VAT across all 27 EU member states: B2B reverse charge, B2C e-commerce OSS rates, and EU VAT number validation.",
      "anchor": "EU VAT calculator"
    },
    "flight_eu261": {
      "title": "EU Flight Compensation Calculator (Regulation EC 261/2004)",
      "desc": "Calculate up to €600 compensation per passenger for delayed (+3h), cancelled, or overbooked flights under EU passenger rights law.",
      "anchor": "EU flight compensation calculator"
    },
    "schengen_90180": {
      "title": "Schengen 90/180-Day Rule Calculator",
      "desc": "Track multiple stays across 29 Schengen countries, avoid overstaying, and determine your maximum legal departure date.",
      "anchor": "Schengen 90/180-day rule calculator"
    },
    "pea_cto": {
      "title": "PEA vs Standard Brokerage (CTO) Tax Optimizer",
      "desc": "Model the 5-year French PEA tax exemption (18.6% vs 31.4% flat tax) and frictionless dividend compounding.",
      "anchor": "PEA vs standard brokerage"
    },
    "eu_dpe": {
      "title": "EU Energy Performance Certificate (DPE) Renovation Auditor",
      "desc": "Evaluate thermal leak rental bans (G in 2025, F in 2028, E in 2034), calculate renovation subsidies and green property value gains.",
      "anchor": "EU energy performance certificate"
    },
    "gdpr_penalty": {
      "title": "GDPR Fine Calculator: Article 83 Risk Assessment",
      "desc": "Estimate statutory maximum GDPR penalties (up to €20M or 4% of global turnover) and evaluate compliance severity factors.",
      "anchor": "GDPR fine calculator"
    },
    "eu_notary": {
      "title": "Property Transfer Tax in Europe: Notary Fees by Country",
      "desc": "Compare real estate acquisition costs across France, Belgium, Spain, Italy, Germany, and Portugal for existing and new homes.",
      "anchor": "Property transfer tax in Europe"
    },
    "eu_mileage": {
      "title": "French Mileage Allowance Calculator: Tax Scale and Expenses",
      "desc": "French tax scale: allowance by fiscal horsepower, 20% EV bonus, comparison with the 10% flat deduction and a ready-to-copy expense report with tolls and meals.",
      "anchor": "French mileage allowance"
    },
    "einvoicing_peppol": {
      "title": "EU E-Invoicing Cost Simulator: Peppol and Factur-X",
      "desc": "Prepare for mandatory B2B e-invoicing in Europe (EN 16931), calculate processing savings, and preview hybrid Factur-X XML data.",
      "anchor": "EU e-invoicing cost simulator"
    },
    "eu_energy_units": {
      "title": "EU Energy Unit Converter & Electricity / Gas Bill Estimator",
      "desc": "Convert kWh, MWh, m³ natural gas (GCV), Thermies, and Joules with European energy bill breakdowns (commodity, grid, taxes).",
      "anchor": "EU energy unit converter"
    },
    "us_multistate_tax": {
      "title": "US Multistate Tax Calculator for Remote Workers",
      "desc": "Apportion income and state tax liabilities across multiple US states (CA, NY, TX, FL) with 'Convenience of the Employer' rule handling.",
      "anchor": "US multistate tax calculator"
    },
    "eu_cbam_tax": {
      "title": "EU CBAM Calculator: Carbon Border Adjustment Mechanism",
      "desc": "Estimate EU CBAM carbon certificate liabilities and border surcharges for industrial imports of steel, aluminum, cement, and fertilizers.",
      "anchor": "EU CBAM calculator"
    },
    "us_section179": {
      "title": "US Section 179 Calculator with Bonus Depreciation",
      "desc": "Calculate immediate first-year equipment write-offs, 100% bonus depreciation, and heavy vehicle deductions (>6,000 lbs GVWR).",
      "anchor": "US Section 179 calculator"
    },
    "us_expat_feie_ftc": {
      "title": "US Expat Tax Optimizer (FEIE Form 2555 vs FTC Form 1116)",
      "desc": "Compare the Foreign Earned Income Exclusion (up to $132,900 in 2026) against the Foreign Tax Credit to eliminate transatlantic double taxation.",
      "anchor": "US expat tax optimizer"
    },
    "eu_golden_visa": {
      "title": "EU Golden Visa & Tax Residency Regime Simulator",
      "desc": "Compare investment thresholds, special expat tax regimes (Beckham Law, NHR 2.0, €300k Flat Tax), and citizenship timelines in Spain, Portugal, Greece, Italy, and France.",
      "anchor": "EU golden visa"
    },
    "us_mortgage_refi": {
      "title": "US Mortgage Refinance Breakeven & Discount Points Optimizer",
      "desc": "Calculate your exact breakeven horizon in months, model discount point buydowns, and project net savings over 5, 10, and 30 years.",
      "anchor": "US mortgage refinance breakeven"
    },
    "eu_roaming_fup": {
      "title": "EU Roaming Fair Use Calculator: Data Allowance Abroad",
      "desc": "Calculate your statutory minimum surcharge-free EU roaming data allowance using the official European Commission formula.",
      "anchor": "EU roaming fair use calculator"
    },
    "eu_csrd_esg": {
      "title": "EU CSRD Compliance Checker: Thresholds and ESRS",
      "desc": "Check statutory CSRD thresholds (headcount, revenue, balance sheet), mandatory reporting timelines, and ESRS double materiality readiness.",
      "anchor": "EU CSRD compliance checker"
    },
    "us_529_education": {
      "title": "US 529 College Savings Calculator and Roth IRA Rollover",
      "desc": "Model compound tax-free college growth, state tax deductions, and penalty-free rollovers up to $35,000 into a beneficiary's Roth IRA.",
      "anchor": "US 529 college savings calculator"
    },
    "us_rd_tax_credit": {
      "title": "US R&D Tax Credit & Payroll Offset Calculator (Form 6765)",
      "desc": "Calculate IRS Section 41 research tax credits using the Alternative Simplified Credit (ASC) and up to $500,000 payroll tax offset for startups.",
      "anchor": "US R&D tax credit"
    },
    "eu_car_import_tax": {
      "title": "EU Car Import Tax & CO2 / Weight Malus Calculator",
      "desc": "Calculate total import duties, VAT, age-depreciated WLTP CO2 malus, and weight penalty when importing vehicles into France/EU.",
      "anchor": "EU car import tax"
    },
    "us_qsbs_tax_exemption": {
      "title": "US QSBS Calculator: Section 1202 Capital Gain Exemption",
      "desc": "Calculate your 100% tax-free capital gain exclusion up to $10M or 10x basis on Qualified Small Business Stock (C-Corp) sales.",
      "anchor": "US QSBS calculator"
    },
    "eu_dsa_cookie_compliance": {
      "title": "EU DSA Compliance Checker: Cookie Consent and Fine Risk",
      "desc": "Assess your Digital Services Act scope, detect dark pattern cookie banners, and quantify statutory fine exposure up to 6% of global turnover.",
      "anchor": "EU DSA compliance checker"
    },
    "us_estate_gift_tax": {
      "title": "US Estate Tax Calculator: Gift Tax and Lifetime Exemption",
      "desc": "Project 40% federal estate taxes with the $15M 2026 exemption and optimize annual gift exclusion tax-free transfers.",
      "anchor": "US estate tax calculator"
    },
    "eu_a1_social_security": {
      "title": "EU Cross-Border Social Security & A1 Certificate Simulator",
      "desc": "Determine applicable social security jurisdiction for cross-border teleworkers, test 25%/50% thresholds, and model payroll contribution impacts.",
      "anchor": "EU cross-border social security"
    },
    "us_qoz_capital_gains": {
      "title": "US Qualified Opportunity Zone (QOZ §1400Z-2) Tax Simulator",
      "desc": "Model capital gains tax deferral and 100% tax-free fund gains after 10 years of holding in a Qualified Opportunity Fund.",
      "anchor": "US Qualified Opportunity Zone"
    },
    "eu_ai_act_compliance": {
      "title": "EU AI Act Compliance Checker: Risk Class and Fines",
      "desc": "Classify your AI systems under Regulation (EU) 2024/1689 (Annex III High-Risk, GPAI models) and compute maximum statutory fine liability.",
      "anchor": "EU AI Act compliance checker"
    },
    "us_cost_segregation": {
      "title": "US Cost Segregation Calculator with Bonus Depreciation",
      "desc": "Accelerate depreciation on commercial and residential rental properties into 5-year and 15-year buckets for immediate cashflow deductions.",
      "anchor": "US cost segregation calculator"
    },
    "eu_whistleblowing_compliance": {
      "title": "EU Whistleblowing Directive 2019/1937 Compliance Auditor",
      "desc": "Verify compliance with mandatory internal reporting channels, strict statutory deadlines (7-day ack / 3-month follow-up), and anti-retaliation rules.",
      "anchor": "EU Whistleblowing Directive"
    },
    "tiktok_creator_rewards_rpm": {
      "title": "TikTok Creator Rewards & RPM Earnings Simulator",
      "desc": "Estimate monthly TikTok creator rewards payouts based on qualified views (>1 min), audience geographic RPM, and retention.",
      "anchor": "TikTok Creator Rewards"
    },
    "instagram_engagement_pricing": {
      "title": "Instagram Engagement Rate & Sponsorship Pricing Calculator",
      "desc": "Calculate real weighted engagement rates (likes, comments, saves, shares) and receive recommended brand sponsorship rate cards for Reels and Posts.",
      "anchor": "Instagram engagement rate"
    },
    "youtube_adsense_shorts_rpm": {
      "title": "YouTube Revenue Simulator (Long-Form, Shorts & Memberships)",
      "desc": "Model YouTube monetization revenue across video durations (>8 min mid-rolls), high-paying niches, Shorts views, and channel memberships.",
      "anchor": "YouTube revenue simulator"
    },
    "social_hook_virality_analyzer": {
      "title": "Video Hook Analyzer: Retention Score for TikTok and Reels",
      "desc": "Analyze the first 3 seconds of your video hooks, detect high-impact psychological trigger words, and generate proven viral formulas.",
      "anchor": "Video hook analyzer"
    },
    "linkedin_ssi_reach_simulator": {
      "title": "LinkedIn SSI Score & Organic Post Reach Simulator",
      "desc": "Diagnose your Social Selling Index (out of 100) and simulate format reach multipliers (PDF carousels vs external links) under the LinkedIn algorithm.",
      "anchor": "LinkedIn SSI score"
    },
    "ugc_creator_rate_calculator": {
      "title": "UGC Creator Rate & Paid Ads Licensing Calculator",
      "desc": "Calculate fair market pricing for UGC video packages, extra hooks for A/B testing, paid ads usage rights, and export ready-to-send client proposals.",
      "anchor": "UGC creator rate"
    },
    "social_giveaway_roi_calculator": {
      "title": "Social Media Giveaway ROI & Retained Follower Cost Simulator",
      "desc": "Measure true acquisition costs of social media contests factoring in 30-day post-giveaway churn and email lead generation.",
      "anchor": "Social media giveaway ROI"
    },
    "streamer_revenue_sub_split": {
      "title": "Twitch Revenue Calculator: 50/50, 70/30 Splits vs Kick",
      "desc": "Forecast net live streaming income across sub tiers, Prime, Bits, and ad CPMs with self-employment tax deductions.",
      "anchor": "Twitch revenue calculator",
      "seo_title": "Twitch Revenue Calculator: 50/50, 70/30 Splits vs Kick"
    },
    "social_video_specs_bitrate": {
      "title": "Social Video Bitrate & Safe-Zones Export Calculator",
      "desc": "Calculate ideal target export bitrates (Mbps) to prevent algorithm compression degradation and verify platform safe-zone overlays.",
      "anchor": "Social video bitrate"
    },
    "hashtag_reach_shadowban_auditor": {
      "title": "Banned Hashtag Checker: Reach, SEO and Shadowban Risk",
      "desc": "Audit your hashtag sets, eliminate banned spam tags, and optimize your 3-3-2 semantic search strategy for Instagram and TikTok.",
      "anchor": "Banned hashtag checker"
    },
    "best_posting_time_heatmap": {
      "title": "Social Media Best Posting Times Heatmap Matrix",
      "desc": "Identify peak engagement windows across Instagram, TikTok, LinkedIn, YouTube, and X to maximize initial organic reach.",
      "anchor": "Social media best posting times"
    },
    "social_profile_audit_scorecard": {
      "title": "Social Profile Conversion Audit & Scorecard",
      "desc": "Audit your bio, visual branding, SEO, and sales funnel on a 100-point rubric to convert profile visitors into paying followers.",
      "anchor": "Social profile conversion audit"
    },
    "meta_ads_roas_cpa_simulator": {
      "title": "Meta Ads Simulator: Break-Even ROAS, Target CPA & Profit",
      "desc": "Calculate your minimum allowable break-even ROAS, forecast target CPA and simulate net profit after ad spend on Facebook & Instagram.",
      "anchor": "Meta Ads simulator"
    },
    "tiktok_shop_affiliate_earnings": {
      "title": "TikTok Shop Affiliate & Creator Showcase Earnings Calculator",
      "desc": "Estimate monthly affiliate commissions from the TikTok yellow cart based on CTR, conversion rates, and gross merchandise value (GMV).",
      "anchor": "TikTok Shop affiliate"
    },
    "pinterest_traffic_affiliate_estimator": {
      "title": "Pinterest Evergreen Traffic & Affiliate Revenue Estimator",
      "desc": "Model monthly outbound pin clicks to your website or blog and calculate passive revenue from affiliate links and ad displays.",
      "anchor": "Pinterest evergreen traffic"
    },
    "podcast_sponsorship_cpm_calculator": {
      "title": "Podcast Sponsorship Rate & CPM Pricing Calculator",
      "desc": "Calculate pre-roll, mid-roll host-read, and monthly package rates, and generate a clear rate card to pitch sponsors.",
      "anchor": "Podcast sponsorship rate"
    },
    "social_bio_link_clicks_converter": {
      "title": "Link-in-Bio Funnel & Value-Per-Click Calculator (Stan Store)",
      "desc": "Determine the monetary value per profile click, lead capture rate, and digital product sales generated from your link in bio.",
      "anchor": "Link-in-bio funnel"
    },
    "influencer_collab_roi_brand": {
      "title": "Influencer Marketing Campaign ROI & Profitability Simulator",
      "desc": "Calculate net profit, campaign ROAS, customer acquisition cost (CAC), and break-even orders for brand-creator partnerships.",
      "anchor": "Influencer marketing campaign ROI"
    },
    "content_repurposing_time_roi": {
      "title": "Content Repurposing Multiplier & Time Saved ROI",
      "desc": "Quantify production hours and budget saved by turning 1 core pillar asset (video/podcast) into 10+ cross-platform formats.",
      "anchor": "Content repurposing multiplier"
    },
    "community_manager_freelance_rate": {
      "title": "Freelance Social Media Manager Rate Calculator (Retainer)",
      "desc": "Estimate monthly workload hours (content design, reels, moderation) and calculate the optimal monthly retainer package for clients.",
      "anchor": "Social media manager rate calculator"
    },
    "saas_mrr_churn_nrr_simulator": {
      "title": "SaaS MRR Growth Simulator: ARR, Churn, NRR, Quick Ratio",
      "desc": "Model recurring revenue growth, Net Revenue Retention (NRR > 100%), logo vs revenue churn, and a 12-month valuation trajectory.",
      "anchor": "SaaS MRR growth simulator"
    },
    "cold_email_deliverability_warmup": {
      "title": "Cold Email Deliverability Checker: Spam Words and Warmup",
      "desc": "Audit DNS records (SPF, DKIM, DMARC), detect inbox spam trigger words, and build a safe 4-week sending ramp-up schedule.",
      "anchor": "Cold email deliverability checker"
    },
    "youtube_title_ctr_ab_simulator": {
      "title": "YouTube Video Title Optimizer & CTR A/B Testing Simulator",
      "desc": "Grade your video titles with algorithmic hooks, simulate CTR lift (+%), and project extra views, revenue, and new subscribers.",
      "anchor": "YouTube video title optimizer"
    },
    "real_estate_cap_rate_dscr_calculator": {
      "title": "Real Estate Cap Rate, DSCR & Cash-on-Cash Return Calculator",
      "desc": "Analyze investment property profitability: Net Operating Income (NOI), bank DSCR coverage ratio, cash flow, and 5-year equity build-up.",
      "anchor": "Real estate cap rate"
    },
    "freelance_scope_creep_estimator": {
      "title": "Freelance Scope Creep & Change Order Price Estimator",
      "desc": "Price out-of-scope client requests, calculate delivery delays, and generate a ready-to-send professional change order email.",
      "anchor": "Freelance scope creep"
    },
    "crypto_dca_vs_lump_sum_simulator": {
      "title": "Crypto DCA vs. Lump Sum Investment Return Simulator",
      "desc": "Compare one-time lump sum investing against recurring Dollar-Cost Averaging across bull, bear, and volatile market cycles.",
      "anchor": "Crypto DCA vs lump sum"
    },
    "remote_work_home_office_deduction": {
      "title": "Home Office Tax Deduction Calculator: Actual Expenses",
      "desc": "Calculate deductible housing, electricity, and equipment costs based on home office square footage and teleworking frequency.",
      "anchor": "Home office tax deduction calculator"
    },
    "website_carbon_co2_estimator": {
      "title": "Website Carbon Footprint & Page Carbon Rating CO2 Estimator",
      "desc": "Estimate CO2 emissions per page view based on transfer weight in MB/KB, green hosting energy mix, and tree offset equivalencies.",
      "anchor": "Website carbon footprint"
    },
    "deep_work_focus_time_audit": {
      "title": "Deep Work Time Audit, Interruption Cost & Focus Ratio",
      "desc": "Measure actual cognitive flow state hours after subtracting meetings and Slack pings, and calculate the annual cost of context switching.",
      "anchor": "Deep work time audit"
    },
    "substack_newsletter_revenue_forecaster": {
      "title": "Substack Paid Newsletter Revenue & Churn Forecaster",
      "desc": "Model free-to-paid subscriber conversion, annual vs. monthly tier ratio, platform fees, and forecast recurring MRR/ARR over 12 months.",
      "anchor": "Substack paid newsletter revenue"
    },
    "freelance_late_payment_interest": {
      "title": "Late Payment Interest Calculator for Overdue Invoices",
      "desc": "Calculate statutory late payment interest (ECB refi rate + 10%) and the mandatory 40€ B2B recovery fee with an automated formal demand letter.",
      "anchor": "Late payment interest calculator"
    },
    "merchant_of_record_fee_comparison": {
      "title": "Stripe vs Merchant of Record Fees: Paddle, Lemon Squeezy",
      "desc": "Compare direct gateway processing fees and international VAT compliance costs against Merchant of Record platforms based on sales volume.",
      "anchor": "Stripe vs Merchant of Record"
    },
    "saas_cac_payback_magic_number": {
      "title": "SaaS Magic Number & CAC Payback Period Efficiency Calculator",
      "desc": "Measure sales & marketing efficiency (Magic Number), months to recover customer acquisition costs, and SaaS unit economics.",
      "anchor": "SaaS Magic Number"
    },
    "crypto_staking_impermanent_loss": {
      "title": "Liquidity Pool Simulator: Impermanent Loss and Staking APY",
      "desc": "Calculate compound staking rewards and estimate 50/50 liquidity pool impermanent loss against holding tokens (HODL) across price shifts.",
      "anchor": "Liquidity pool simulator"
    },
    "airbnb_short_term_rental_yield": {
      "title": "Airbnb vs Long-Term Rental Calculator: Yield and Cash Flow",
      "desc": "Compare short-term vacation rental yield against long-term leases accounting for occupancy, cleaning fees, concierge commissions, and taxes.",
      "anchor": "Airbnb vs long-term rental calculator"
    },
    "solar_battery_storage_roi": {
      "title": "Solar Battery Payback Calculator (France): Storage ROI",
      "desc": "Is a home battery worth adding to solar panels in France? Estimate the rise in self-consumption, the bill savings and the payback of lithium storage.",
      "anchor": "Solar battery payback calculator"
    },
    "caffeine_metabolism_sleep_tracker": {
      "title": "Caffeine Half-Life Calculator: Bedtime Cutoff for Sleep",
      "desc": "Track daily coffee and caffeine intake half-life breakdown, calculate residual bloodstream mg at bedtime, and determine your optimal cutoff time.",
      "anchor": "Caffeine half-life calculator"
    },
    "value_based_pricing_calculator": {
      "title": "Value-Based Pricing Calculator for Freelancers & Consultants",
      "desc": "Transition from hourly/daily billing to capturing 5% to 15% of the client's expected economic value with a structured 3-tier proposal package.",
      "anchor": "Value-based pricing calculator"
    },
    "rupture_conventionnelle_are_simulator": {
      "title": "French ARE Unemployment Calculator: Rupture Conventionnelle",
      "desc": "Estimate your French unemployment benefit (ARE) after a rupture conventionnelle: monthly net amount paid by France Travail, waiting days before the first payment and maximum duration by age.",
      "anchor": "French ARE unemployment calculator"
    },
    "accessible_color_palette_generator": {
      "title": "Accessible Color Palette Generator: WCAG AA/AAA, Tailwind",
      "desc": "Generate accessible design system color palettes compliant with WCAG 2.2 contrast ratios and export directly to Tailwind CSS.",
      "anchor": "Accessible color palette generator"
    },
    "real_estate_capital_gains_tax": {
      "title": "Property Capital Gains Tax Calculator for France",
      "desc": "Calculate net taxable property capital gains, progressive holding duration allowances, and total tax liability.",
      "anchor": "Property capital gains tax calculator"
    },
    "debt_to_income_hcsf_calculator": {
      "title": "Debt-to-Income Ratio Calculator: 35% Cap and Living Budget",
      "desc": "Audit mortgage affordability against strict 35% debt caps (including borrower insurance), rent jump, and bank living budget standards.",
      "anchor": "Debt to income ratio calculator"
    },
    "unix_timestamp_epoch_converter": {
      "title": "Unix Timestamp Converter: Epoch to Date, UTC and Local Time",
      "desc": "Convert seconds/milliseconds timestamps into human readable dates, inspect live epoch clock, and run bulk conversions.",
      "anchor": "Unix timestamp converter"
    },
    "personal_water_footprint_calculator": {
      "title": "Personal Water Footprint Calculator: Tap and Virtual Water",
      "desc": "Evaluate your true daily water footprint combining domestic tap usage and invisible virtual water from diet, meat, and consumer goods.",
      "anchor": "Water footprint calculator"
    },
    "real_hourly_wage_audit": {
      "title": "Real Hourly Wage Calculator: Commute, Unpaid Hours, Costs",
      "desc": "Uncover your true take-home hourly wage after factoring in commute time, off-the-clock overtime, and out-of-pocket work expenses.",
      "anchor": "Real hourly wage calculator"
    },
    "gdpr_legal_notice_generator": {
      "title": "GDPR Privacy Policy Generator and Website Legal Notice",
      "desc": "Create compliant legal notices and GDPR data protection privacy policies for your SaaS apps, websites, and online stores.",
      "anchor": "GDPR privacy policy generator"
    },
    "ups_battery_runtime_calculator": {
      "title": "UPS Runtime Calculator: Battery Backup Time and VA Sizing",
      "desc": "Estimate blackout backup duration in minutes for connected hardware (PC, NAS, router) and compute recommended VA capacity.",
      "anchor": "UPS runtime calculator"
    },
    "solar_panel_payback": {
      "title": "Solar Panel Payback Calculator for France: Self-Consumption",
      "desc": "Calculate the payback of rooftop solar panels in France: output by region, self-consumption at the regulated rate and surplus sold under the EDF OA feed-in contract.",
      "anchor": "Solar panel payback calculator"
    },
    "regex_tester_explainer": {
      "title": "Regex Tester with Replace: Live Matches and Capture Groups",
      "desc": "Test a JavaScript regex on your text: highlighted matches, positions, capture groups, replacement with $1 and $2, token explanations and ready-made patterns.",
      "anchor": "Regex tester with replace"
    },
    "student_loan_repayment": {
      "title": "Student Loan Repayment Calculator with Grace Period",
      "desc": "Work out in euros the monthly payment during your studies (partial or full grace period, interest capitalized yearly), the payment after graduation and the total cost of interest and insurance.",
      "anchor": "Student loan repayment"
    },
    "prime_activite_caf": {
      "title": "Prime d'activité Simulator: French In-Work Benefit (CAF)",
      "desc": "Estimate your monthly French in-work benefit (Prime d’Activité) according to your net income, family situation, and housing status.",
      "anchor": "Prime d'activité simulator"
    },
    "per_retirement_tax_savings": {
      "title": "French PER Retirement Plan Calculator: Tax Savings",
      "desc": "Calculate immediate upfront income tax savings, compound interest retirement nest egg, and net after-tax lump sum at retirement.",
      "anchor": "French PER retirement plan calculator"
    },
    "json_diff_compare": {
      "title": "Smart JSON Diff & Structural Comparison Tool",
      "desc": "Compare two JSON objects side-by-side in real time with automatic validation, deep recursive structural diff, and formatting.",
      "anchor": "JSON diff"
    },
    "us_401k_retirement": {
      "title": "US 401k Calculator: Retirement Growth and Employer Match",
      "desc": "Project your retirement nest egg with compound interest, employer matching, IRS annual limits, and inflation-adjusted purchasing power.",
      "anchor": "US 401k calculator"
    },
    "us_paycheck_tax": {
      "title": "Salary Calculator USA: Take-Home Paycheck After Taxes",
      "desc": "Calculate your net take-home paycheck after federal income tax brackets, Social Security, Medicare, and state withholding.",
      "anchor": "Salary calculator USA"
    },
    "auto_loan_financing": {
      "title": "US Car Loan Calculator with Trade-In and Sales Tax",
      "desc": "Estimate a US car loan in dollars: monthly payment, total interest, your state sales tax, trade-in equity including any amount still owed, and 36 to 84-month terms compared.",
      "anchor": "US car loan calculator with trade in"
    },
    "mortgage_refinance": {
      "title": "Mortgage Refinance Calculator: Break-Even and Total Savings",
      "desc": "Determine if refinancing your home mortgage saves money by calculating break-even months, monthly savings, and total interest reduction.",
      "anchor": "Mortgage refinance calculator"
    },
    "college_gpa_calculator": {
      "title": "College & High School GPA Calculator (Weighted / Unweighted)",
      "desc": "Calculate semester and cumulative grade point average (GPA) on a 4.0 scale with honors/AP weighting and academic honors tracking.",
      "anchor": "GPA calculator"
    },
    "ovulation_fertility": {
      "title": "Ovulation Calculator: Fertile Window, Next Periods, Due Date",
      "desc": "Estimate ovulation, fertile days and peak fertility over 3 cycles, plus the date for a pregnancy test and the estimated due date.",
      "anchor": "Fertility calculator"
    },
    "pet_dog_age": {
      "title": "Dog Age Calculator: Dog and Cat Years to Human Years",
      "desc": "Convert your pet's age into human years using indicative weight-adjusted physiological curves and life stage wellness guidelines.",
      "anchor": "Dog age calculator"
    },
    "body_fat_navy": {
      "title": "US Navy Body Fat Percentage Calculator (Tape Measure Method)",
      "desc": "Estimate your body fat percentage, fat mass, lean body mass, and ACE fitness category with simple circumference measurements.",
      "anchor": "US Navy body fat percentage"
    },
    "work_hours_overtime": {
      "title": "US Time Card Calculator: Weekly Hours, Breaks and Overtime",
      "desc": "Fill in a weekly US time card: clock-in and clock-out times, unpaid meal breaks, daily and weekly hour totals, then hours over 40 and gross pay in dollars under the FLSA.",
      "anchor": "US time card calculator"
    },
    "fire_retirement_calculator": {
      "title": "FIRE Calculator: Financial Independence and the 4% Rule",
      "desc": "Calculate your FIRE number, savings rate, years to financial freedom, and Lean, Fat, Coast, and Barista FIRE milestones.",
      "anchor": "FIRE calculator"
    },
    "solar_roi_savings": {
      "title": "Solar Savings Calculator (USA): Panel ROI and Payback",
      "desc": "Estimate home solar payback in the United States by state (sun hours, electric rate in $), without the 30% federal 25D credit repealed in 2026, plus 25-year savings.",
      "anchor": "Solar savings calculator"
    },
    "social_security_benefits": {
      "title": "US Social Security Calculator: Benefits by Claiming Age",
      "desc": "Estimate your monthly Social Security check based on claiming age: early at 62 (-30%), FRA at 67 (100%), or delayed at 70 (+24%).",
      "anchor": "US Social Security calculator"
    },
    "discount_sales_tax": {
      "title": "Discount and Sales Tax Calculator with Stacked Coupons",
      "desc": "$100 at 60% off plus 5% sales tax comes to $42. Stack coupons and clearance discounts, add your state's sales tax and see what you save.",
      "anchor": "Discount and sales tax calculator",
      "seo_title": "Sale Price Calculator: % Off, Coupons and Sales Tax"
    },
    "blood_pressure_aha": {
      "title": "Blood Pressure Calculator: AHA Category and Pulse Pressure",
      "desc": "Classify systolic and diastolic blood pressure readings against American Heart Association standards, pulse pressure, and MAP.",
      "anchor": "Blood pressure calculator"
    },
    "auto_loan": {
      "title": "Auto Loan Calculator: Monthly Car Payment and Interest",
      "desc": "Work out a monthly car loan payment in your own currency, with total interest, down payment, trade-in and fees. Sales tax is optional: leave it at 0 where VAT is already in the price.",
      "anchor": "Car payment calculator"
    },
    "subnet_cidr": {
      "title": "IPv4 Subnet & CIDR Prefix Calculator (Netmask & Host Range)",
      "desc": "Calculate network addresses, broadcast IPs, usable host ranges, binary subnets, and wildcard masks from any IP with CIDR slash notation."
    },
    "freelance_salary": {
      "title": "Freelance Hourly Rate to Salary Calculator (1099 vs W-2)",
      "desc": "Convert contractor billing rates to net take-home pay, factoring in 15.3% SECA self-employment tax, unpaid PTO, and health insurance.",
      "anchor": "Hourly rate to salary calculator"
    },
    "sleep_cycle": {
      "title": "90 Minute Sleep Cycle Calculator: Best Bedtime and Wake-Up",
      "desc": "Find bedtimes or wake-up times in 90-minute cycles, your sleep debt over 7 nights and the right nap length.",
      "anchor": "90 minute sleep cycle calculator"
    },
    "air_conditioner_btu": {
      "title": "Air Conditioner Size Calculator: BTU and Tons by Room",
      "desc": "Calculate required cooling capacity in BTU/hr and HVAC tons based on room square footage, ceiling height, sunlight, and occupants.",
      "anchor": "Air conditioner size calculator"
    },
    "four_oh_one_k_match": {
      "title": "401(k) Employer Match & Compound Growth Retirement Calculator",
      "desc": "Maximize your 401(k) company match, capture free employer contributions, and project your nest egg with compound investment growth."
    },
    "gas_trip_cost": {
      "title": "Road Trip Gas Calculator: Fuel, Tolls and Cost Per Person",
      "desc": "Estimate fuel, round-trip tolls, parking and optional wear for a road trip, then each passenger’s share, with or without the driver paying.",
      "anchor": "Road trip gas calculator"
    },
    "aspect_ratio": {
      "title": "Aspect Ratio & Video Resolution Dimension Scaler Calculator",
      "desc": "Calculate target width and height in pixels while preserving exact aspect ratio for video editing, social media, and web layouts."
    },
    "us_auto_lease": {
      "title": "US Car Lease Calculator: Payment, Money Factor, Lease vs Buy",
      "desc": "US car lease payment with money factor, residual and sales tax. Money factor to APR converter both ways, money factor of an offer, and a lease vs finance comparison over several years.",
      "anchor": "US car lease calculator"
    },
    "us_rmd": {
      "title": "RMD Calculator: Required Minimum Distribution for IRA, 401k",
      "desc": "Estimate mandatory retirement account withdrawals from Traditional 401(k) and IRAs, tax implications, and avoid the 25% IRS penalty.",
      "anchor": "RMD calculator"
    },
    "calorie_deficit_planner": {
      "title": "Weight Loss Date Calculator: Calorie Deficit to Goal Weight",
      "desc": "Calculate your exact target date for weight loss based on daily caloric deficit, Mifflin-St Jeor BMR, TDEE, and customized macronutrients.",
      "anchor": "Weight loss date calculator"
    },
    "us_closing_costs": {
      "title": "US Closing Cost Calculator: Home Buyer and Seller Fees",
      "desc": "Estimate buyer and seller closing costs, loan origination fees, title insurance, escrow reserves, and state transfer taxes.",
      "anchor": "US closing cost calculator"
    },
    "us_overtime_paycheck": {
      "title": "US Overtime Calculator: FLSA 1.5x, Double Time and Paycheck",
      "desc": "Calculate a US overtime paycheck: FLSA regular rate including bonuses, hours at 1.5x and double time, FICA, federal and state withholding, and net take-home pay.",
      "anchor": "US overtime calculator"
    },
    "client_retainer": {
      "title": "Retainer Calculator: Monthly Fee and Effective Hourly Rate",
      "desc": "Price recurring client retainers, calculate effective hourly yields, avoid scope creep, and build predictable monthly recurring revenue (MRR).",
      "anchor": "Retainer calculator"
    },
    "solar_inverter_battery": {
      "title": "Solar Battery Calculator: Inverter, Panels and Off-Grid Days",
      "desc": "Size your home battery bank in kWh, peak continuous inverter wattage, and solar panel requirements for complete grid-tie or off-grid backup.",
      "anchor": "Solar battery calculator"
    },
    "home_remodel_roi": {
      "title": "Home Remodel ROI Calculator: Renovation Cost Recouped",
      "desc": "Calculate return on investment and cost recouped at resale for kitchens, bathrooms, decks, roof replacements, and heat pumps.",
      "anchor": "Home remodel ROI calculator"
    },
    "hsa_investment_growth": {
      "title": "HSA Calculator: Triple Tax Advantage and Investment Growth",
      "desc": "Project long-term compound growth of an invested Health Savings Account, compare vs taxable accounts, and leverage the Stealth IRA strategy.",
      "anchor": "HSA calculator"
    },
    "crypto_tax_lot": {
      "title": "Crypto Tax Lot Optimizer (US): HIFO vs FIFO vs LIFO Gains",
      "desc": "Compare HIFO, FIFO and LIFO on a US crypto sale: short- and long-term gains under IRS rules, federal tax at your rates and the optional 3.8% NIIT surtax.",
      "anchor": "US crypto tax lot optimizer"
    },
    "heat_pump_savings": {
      "title": "Heat Pump Savings Calculator: Boiler Replacement ROI",
      "desc": "Calculate annual heating savings, return on investment (ROI) net of your subsidies, and CO₂ emissions reduction when switching to a heat pump.",
      "anchor": "Heat pump savings calculator"
    },
    "lmnp_tax": {
      "title": "LMNP Real vs Micro-BIC Furnished Rental Tax Simulator",
      "desc": "Compare the 50% flat allowance against the Real Simplified Regime with accounting depreciation to eliminate rental income taxes.",
      "anchor": "Furnished rental tax simulator"
    },
    "ev_tco_savings": {
      "title": "EV vs Gas Calculator: TCO and Cost per 100 km",
      "desc": "Compare an electric car with a petrol or diesel one: cost per 100 km with off-peak, peak or fast charging, yearly savings and total cost of ownership over 3 to 8 years.",
      "anchor": "EV vs gas cost calculator"
    },
    "golden_ratio": {
      "title": "Golden Ratio Calculator (1.618) and Fibonacci Type Scale",
      "desc": "Calculate major (61.8%) and minor (38.2%) harmonious sections, generate modular typography scales and perfect UI canvas dimensions.",
      "anchor": "Golden ratio calculator"
    },
    "severance_pay": {
      "title": "French Severance Pay Calculator and Mutual Termination",
      "desc": "Calculate statutory minimum severance, net take-home payout after social taxes, negotiated extra indemnity, and unemployment delay.",
      "anchor": "French severance pay calculator"
    },
    "ip_subnet_cidr": {
      "title": "IP Subnet Calculator: IPv4 CIDR Mask, Host Range, Wildcard",
      "desc": "Enter an IPv4 address and a CIDR prefix to get the network and broadcast addresses, usable host range, subnet mask, wildcard mask, binary view, class and address type.",
      "anchor": "IP subnet calculator"
    },
    "freelance_tjm_salary": {
      "title": "Day Rate to Salary Converter and TJM Calculator (France)",
      "desc": "French day rate to take-home pay (micro, EURL, SASU, portage) after contributions and tax, gross employee salary equivalent, or the rate for a target income.",
      "anchor": "Day rate to salary converter"
    },
    "fps_sensitivity": {
      "title": "Sensitivity Converter: CS2, Valorant, Apex and cm/360°",
      "desc": "Accurately convert your mouse sensitivity between major FPS games (CS2, Valorant, Apex Legends, Overwatch) preserving muscle memory with cm/360°.",
      "anchor": "Sensitivity converter"
    },
    "tarot_reading": {
      "title": "Free Online Tarot Card Reading Simulator (22 Major Arcana)",
      "desc": "Perform interactive tarot readings (3-Card Past-Present-Future, 5-Card Celtic Cross, or Yes/No answer) with comprehensive arcana interpretations.",
      "anchor": "Tarot card reading"
    },
    "numerology_calc": {
      "title": "Numerology Calculator: Life Path and Personal Year Number",
      "desc": "Calculate your Life Path Number, Expression Number, Soul Urge vibration, and current Personal Year using authentic Pythagorean numerology.",
      "anchor": "Numerology calculator"
    },
    "astrology_ascendant": {
      "title": "Sun Moon Rising Calculator: Ascendant and Moon Sign",
      "desc": "Estimate your Rising Sign (Ascendant), Sun & Moon signs with elemental balance (Fire, Earth, Air, Water) and personality synthesis.",
      "anchor": "Sun moon rising calculator"
    },
    "dice_odds_rpg": {
      "title": "DnD Dice Calculator: 5e Advantage and Dice Pool Odds",
      "desc": "Calculate exact hit probabilities against target DC / Armor Class, Advantage vs Disadvantage math, and multi-dice damage averages.",
      "anchor": "DnD dice calculator"
    },
    "gacha_probability": {
      "title": "Genshin Pull Calculator: Pity, Star Rail and WuWa Odds",
      "desc": "Turn Primogems, Intertwined Fates and Starglitter into wishes, then get your odds for C0 to C6 or the weapon banner. Also covers Star Rail and WuWa pity.",
      "anchor": "Genshin pull calculator"
    },
    "zodiac_compatibility": {
      "title": "Zodiac Love Compatibility & Sun Sign Calculator",
      "desc": "Calculate romantic chemistry, communication, passion and longevity between any two zodiac signs with elemental compatibility analysis.",
      "anchor": "Zodiac love compatibility"
    },
    "pc_gaming_bottleneck": {
      "title": "Bottleneck Calculator: CPU vs GPU Balance for PC Gaming",
      "desc": "Determine if your CPU throttles your GPU in 1080p, 1440p, or 4K with projected competitive and AAA gaming FPS estimates.",
      "anchor": "Bottleneck calculator"
    },
    "mirror_hours": {
      "title": "Mirror Hours & Angel Numbers Synchronicity Decrypter",
      "desc": "Uncover the hidden spiritual meaning of mirror hours (11:11, 22:22), angel numbers (111, 777, 888), guardian angels, and tarology arcana.",
      "anchor": "Angel numbers"
    },
    "poker_odds": {
      "title": "Poker Odds Calculator: Texas Hold'em Outs, Pot Odds and EV",
      "desc": "Calculate your hit equity on the Flop and Turn using the Rule of 2 and 4, pot odds ratio, and expected value (+EV call decision).",
      "anchor": "Poker odds calculator"
    },
    "elo_rating": {
      "title": "Elo Calculator: Rating Change and Win Probability",
      "desc": "Compute Elo point shifts for wins, draws, and losses using the Elo expected-score formula and estimate your expected match win rate.",
      "anchor": "Elo calculator"
    },
    "game_storage": {
      "title": "Game Download Time Calculator: Steam, PS5, Xbox and PC",
      "desc": "A 100 GB game takes about 50 min on a 300 Mbps line (10% overhead included). Work out the download time on Steam, PS5, Xbox or PC.",
      "anchor": "Game download time calculator"
    },
    "fps_monitor": {
      "title": "Frame Time Calculator: Refresh Rate Hz vs FPS in ms",
      "desc": "Frame time = 1,000 ÷ FPS: 60 FPS = 16.7 ms, 144 FPS = 6.9 ms, 240 FPS = 4.2 ms. Compare your monitor's refresh rate (Hz) with your frame rate.",
      "anchor": "Frame time calculator",
      "seo_title": "Frame Time Calculator: FPS to ms (60 FPS = 16.7 ms)"
    },
    "blackjack_strategy": {
      "title": "Blackjack Basic Strategy Chart and Decision Trainer",
      "desc": "Determine the mathematically optimal play for any hand vs dealer upcard according to basic strategy to minimize casino house edge.",
      "anchor": "Blackjack basic strategy chart"
    },
    "minecraft_portal": {
      "title": "Nether Portal Calculator: Minecraft Overworld Coordinates",
      "desc": "Divide X and Z by 8 to go from the Overworld to the Nether, multiply them by 8 on the way back; Y stays the same. Link your portals without mistakes.",
      "anchor": "Nether portal calculator",
      "seo_title": "Nether Portal Calculator: Overworld to Nether Coordinates"
    },
    "pokemon_types": {
      "title": "Pokémon Weakness Calculator for Dual-Type Matchups",
      "desc": "Type a Pokémon or pick two types: ×4 and ×2 weaknesses, resistances, immunities, offense mode, team coverage and type charts from Gen 1 to 9.",
      "anchor": "Pokémon weakness calculator"
    },
    "rpg_damage": {
      "title": "RPG Damage Calculator: Armor, Crits and Average DPS",
      "desc": "Enter base damage, armor, penetration and crit rate to get the real damage per hit and the expected average.",
      "anchor": "RPG damage calculator"
    },
    "chinese_zodiac": {
      "title": "Chinese Zodiac Calculator: Animal, Element and Yin/Yang",
      "desc": "Find your authentic Chinese zodiac animal, elemental pillar (Wood, Fire, Earth, Metal, Water), Yin/Yang polarity, and secret hour animal.",
      "anchor": "Chinese zodiac calculator"
    },
    "chakra_balance": {
      "title": "Chakra Test: 7 Chakras Balance and Solfeggio Frequencies",
      "desc": "Assess your 7 chakras as described by tradition: self-rating from 1 to 5 per chakra, harmony score in % and the associated Solfeggio tones.",
      "anchor": "Chakra test"
    },
    "moon_phase": {
      "title": "Moon Phase Calculator: Illumination and Esoteric Rituals",
      "desc": "Determine the approximate lunar phase, illumination percentage, and optimal manifestation rituals for any calendar date.",
      "anchor": "Moon phase calculator"
    },
    "biorhythm": {
      "title": "Biorhythm Calculator: Physical, Emotional, Intellectual",
      "desc": "Calculate where your physical (23-day), emotional (28-day) and intellectual (33-day) cycles stand on a chosen date, based on Wilhelm Fliess’s biorhythm theory.",
      "anchor": "Biorhythm calculator"
    },
    "lithotherapy": {
      "title": "Healing Crystal Finder: Meanings, Chakras and Cleansing",
      "desc": "Choose a crystal and see the properties tradition attributes to it (love, protection, abundance) and its water, moon or sun cleansing rituals.",
      "anchor": "Healing crystal finder"
    },
    "tibetan_mewa": {
      "title": "Tibetan Astrology Calculator: Mewa Birth Number and Color",
      "desc": "Enter your birth year to get your Mewa, one of the 9 numbers of the Tibetan magic square, and its color.",
      "anchor": "Tibetan astrology calculator"
    },
    "enneagram": {
      "title": "Enneagram 9 Personality Types & Wings Explorer",
      "desc": "Explore the 9 Enneagram personality archetypes, instinctual centers (Gut, Heart, Head), deepest unconscious fears, and neighboring wings.",
      "anchor": "Enneagram 9 personality types"
    },
    "crop_yield_seeding": {
      "title": "Seeding Rate & Plant Density Calculator (seeds/m², kg/ha)",
      "desc": "Work out plant density in seeds/m² and the seeding rate in kg/ha from thousand-grain weight and germination, precision-drill spacing and cover crop mix rates.",
      "anchor": "Seeding rate and plant density",
      "seo_title": "Seeding Rate & Plant Density Calculator (seeds/m², kg/ha)"
    },
    "npk_fertilizer": {
      "title": "NPK Fertilizer Calculator: Crop Nutrient Balance and Plan",
      "desc": "Calculate balanced Nitrogen (N), Phosphorus (P₂O₅), and Potassium (K₂O) fertilizer requirements, factoring in soil mineral reserves and manure/slurry credits.",
      "anchor": "NPK fertilizer calculator"
    },
    "sprayer_calibration": {
      "title": "Sprayer Calibration Calculator: ISO Nozzle Flow Rate",
      "desc": "Determine nozzle flow rate (L/min), optimal operating pressure, ISO nozzle color, and beaker calibration collection time.",
      "anchor": "Sprayer calibration calculator"
    },
    "crop_irrigation": {
      "title": "Crop Water Requirement Calculator: ETc and Irrigation",
      "desc": "Calculate crop evapotranspiration (ETc = ETP × Kc), soil readily available water (RAW), irrigation scheduling, and pumping volumes.",
      "anchor": "Crop water requirement calculator"
    },
    "livestock_feed": {
      "title": "Cattle Ration Calculator: Dry Matter, UFL Energy and PDI",
      "desc": "Determine daily feed requirements in Dry Matter (DM), Net Energy (UFL), and Digestible Protein (PDI) using the INRAE feed unit system.",
      "anchor": "Cattle ration calculator"
    },
    "silage_storage": {
      "title": "Silage Tonnage Calculator: Bunker Silos and Hay Bales",
      "desc": "Calculate bunker silo volume, round/square bale tonnage in Dry Matter (DM), and estimate livestock feeding autonomy.",
      "anchor": "Silage tonnage calculator"
    },
    "soil_ph_liming": {
      "title": "Lime Requirement Calculator: Soil pH and Neutralizing Value",
      "desc": "Calculate required Neutralizing Value (NV) and commercial liming materials (Lime, CaCO3) to correct soil acidity and optimize cation exchange.",
      "anchor": "Lime requirement calculator"
    },
    "tree_vineyard_density": {
      "title": "Orchard & Vineyard Planting Density & Trellising Calculator",
      "desc": "Calculate plants per hectare, total rootstocks required, row linear meters, and trellising wire lengths for vineyards and fruit orchards.",
      "anchor": "Vineyard planting density"
    },
    "manure_slurry": {
      "title": "Manure Storage Calculator: Slurry Pit and Manure Pad Sizing",
      "desc": "Size slurry pits (m³) and solid manure pads (m²) based on herd inventory, winter storage requirements, and calculate total NPK organic value.",
      "anchor": "Manure storage calculator"
    },
    "tractor_fuel_cost": {
      "title": "Tractor Fuel Consumption (GNR) & Field Work Cost Calculator",
      "desc": "How much diesel does a tractor use per hectare and per hour? Indicative figures for ploughing, tillage and drilling, plus the field work cost per hectare.",
      "anchor": "Tractor fuel consumption",
      "seo_title": "Tractor Fuel Consumption per Hectare and per Hour"
    },
    "home_energy_appliance": {
      "title": "Appliance Electricity Cost Calculator: kWh and CO2 per Year",
      "desc": "Estimate the yearly kWh and electricity cost of each home appliance, standby included: water heater, heater, fridge, washer, TV, PC, plus the CO₂ footprint.",
      "anchor": "Appliance electricity cost calculator"
    },
    "intermittent_fasting_window": {
      "title": "Intermittent Fasting Schedule Calculator: 16:8, 18:6, OMAD",
      "desc": "Calculate your fasting and eating windows for 16:8, 18:6, 20:4 or OMAD from your last or first meal, with the time of each stage (ketosis, autophagy).",
      "anchor": "Intermittent fasting schedule"
    },
    "flooring_tile_paint_renovation": {
      "title": "Tile Calculator: Tile Boxes, Flooring, Paint and Wallpaper",
      "desc": "Estimate tile or flooring boxes with cut waste, paint liters and cans for walls and ceilings by surface type, and wallpaper rolls with pattern repeat.",
      "anchor": "Tile and paint calculator"
    },
    "coffee_brew_ratio": {
      "title": "Coffee Ratio Calculator: V60, French Press, Espresso Recipes",
      "desc": "Calculate exact coffee dose (g), water volume (ml), grind size and step-by-step pouring schedule for 7 brewing methods.",
      "anchor": "Coffee ratio calculator"
    },
    "airline_baggage_weight_dimensions": {
      "title": "Airline Baggage Size Checker: Cabin and Checked Bag Weight",
      "desc": "Verify cabin and checked baggage compliance for 9 major airlines and estimate packing weights to avoid airport fees.",
      "anchor": "Airline baggage size checker"
    },
    "kitchen_cooking_measurement": {
      "title": "Cups to Grams Converter, °F to °C and Cake Pan Calculator",
      "desc": "Convert cups, spoons, sticks of butter and fluid ounces to grams using density data for 15 ingredients, switch oven temperatures between °F, °C and gas mark, and scale a recipe to a new pan.",
      "anchor": "Cups to grams converter"
    },
    "blood_alcohol_widmark": {
      "title": "Blood Alcohol Calculator (Widmark): BAC and Time to Sober Up",
      "desc": "Estimate your blood alcohol (g/L), its peak and the time to get below 0.5 g/L, below 0.2 g/L and back to zero, from weight, drinks and timing.",
      "anchor": "Widmark formula calculator"
    },
    "screen_size_ppi_distance": {
      "title": "PPI Calculator: Screen Size, TV Viewing Distance and FOV",
      "desc": "Find optimal 4K/OLED TV screen sizes and seating distances according to THX/SMPTE guidelines and calculate monitor pixel density (PPI).",
      "anchor": "PPI calculator"
    },
    "grocery_unit_price_promo": {
      "title": "Unit Price Calculator: Compare Grocery Sizes and Deals",
      "desc": "Compare price-per-kilo/liter between package sizes and calculate real savings from deals like BOGO, Buy 2 Get 1 Free, and 2nd at -50%.",
      "anchor": "Unit price calculator"
    },
    "houseplant_watering_light": {
      "title": "Houseplant Watering Schedule & Light Exposure Planner",
      "desc": "Get tailored watering frequencies and light placement guidelines based on indoor plant species, pot material, and seasonal weather.",
      "anchor": "Houseplant watering schedule"
    },
    "wifi_speed_bandwidth": {
      "title": "Download Time Calculator and Home Bandwidth Sizer",
      "desc": "Estimate exact download and upload durations for large files and size household bandwidth requirements for concurrent 4K streaming and remote work.",
      "anchor": "Download time calculator"
    },
    "pet_food_calorie_portion": {
      "title": "Pet Food Calculator: Daily Portion and Calories (Dog, Cat)",
      "desc": "Calculate estimated daily feeding portions in grams (kibbles or wet food) and veterinary caloric needs (RER × activity factor).",
      "anchor": "Pet food calculator"
    },
    "shoe_clothing_size_converter": {
      "title": "Shoe Size Converter: US, EU, UK, JP and Clothing Sizes",
      "desc": "Convert shoe pointures and apparel sizes between European, American, British, and Japanese standards with centimeter measurements.",
      "anchor": "Shoe size converter US EU"
    },
    "book_reading_time_goal": {
      "title": "Book Reading Time, WPM Speed & Daily Goal Planner",
      "desc": "At 220 words per minute, 150 pages take about 3 h 10 min and 300 pages 6 h 15 min. Work out your reading time and set a daily page goal.",
      "anchor": "Book reading time",
      "seo_title": "How Long to Read a Book? Reading Time Calculator by Pages"
    },
    "luggage_packing_list_travel": {
      "title": "Smart Luggage Packing List & Travel Checklist Generator",
      "desc": "Generate tailored packing checklists with exact clothing counts calculated for trip length, climate, laundry access, and activities.",
      "anchor": "Luggage packing list"
    },
    "tire_size_speedometer_equiv": {
      "title": "Tire Size Calculator: Equivalence and Speedometer Error",
      "desc": "Check usual tire fitment tolerances (-2% to +1.5%, trade rule of thumb) and calculate speed discrepancies between dashboard and actual GPS speed.",
      "anchor": "Tire size calculator"
    },
    "sunscreen_spf_uv": {
      "title": "Sunscreen Calculator: SPF, UV Index and Safe Exposure Time",
      "desc": "Calculate safe sun exposure time before burning based on Fitzpatrick skin phototype, local UV index, and sunscreen SPF rating.",
      "anchor": "Sunscreen calculator"
    },
    "mattress_bedding_selector": {
      "title": "Mattress Firmness & Ergonomic Pillow Thickness Selector",
      "desc": "Determine optimal mattress firmness level and ergonomic pillow height tailored to body weight, height, and preferred sleeping posture.",
      "anchor": "Mattress firmness"
    },
    "step_distance_km_calorie": {
      "title": "Steps to km Calculator: Distance in Miles and Calories",
      "desc": "Convert pedometer steps into real distance and calories burned factoring in biological stride length and walking pace.",
      "anchor": "Steps to km calculator",
      "seo_title": "10,000 Steps in km: About 7 km (4.5 mi) by Height"
    },
    "food_expiry_freezer_guide": {
      "title": "Food Expiry & Freezer Storage Guide",
      "desc": "Indicative safe shelf life in refrigerator, maximum freezing duration, thawing safety rules, and temperature guidelines.",
      "anchor": "Freezer storage guide"
    },
    "lighting_lumens_kelvin_lux": {
      "title": "Room Lighting Calculator: Lumens, Lux & Kelvin",
      "desc": "Calculate required room lumens, lux standards, bulb wattage, and ideal color temperature (Kelvin) for any living space.",
      "anchor": "Room lighting calculator"
    },
    "car_lease_vs_buy_loan": {
      "title": "LOA, LLD or Car Loan: Real Cost in France and Europe",
      "desc": "Compare the net cost in euros of a LOA (lease with purchase option) or LLD (long-term rental) with a standard car loan in France and Europe: deposit, interest, buyback price and resale value.",
      "anchor": "LOA or car loan calculator"
    },
    "city_center_vs_suburbs": {
      "title": "City Center vs Suburbs Rent & Commute Calculator",
      "desc": "Calculate the true net trade-off between downtown high rent vs suburban commuting costs, fuel, tolls, and lost travel time.",
      "anchor": "City center vs suburbs"
    },
    "tv_viewing_distance_size": {
      "title": "TV Size & Optimal Viewing Distance Calculator",
      "desc": "Calculate the perfect TV diagonal screen size (inches/cm) for your living room viewing distance based on THX & SMPTE cinema guidelines.",
      "anchor": "Optimal viewing distance calculator"
    },
    "battery_powerbank_charge": {
      "title": "Battery Charge Time & Power Bank Capacity Calculator",
      "desc": "A 10,000 mAh power bank charges an iPhone 15 about 2 times (75% efficiency). Work out the real number of charges and your phone charging time.",
      "anchor": "Battery charge time",
      "seo_title": "How Many Charges Does a Power Bank Give? mAh Calculator"
    },
    "double_discount_promo": {
      "title": "Double Discount & Cumulative Promo Calculator",
      "desc": "Calculate stacked successive discounts (e.g. 30% sale + extra 20% coupon code + cashback) avoiding common mathematical traps.",
      "anchor": "Double discount"
    },
    "aspect_ratio_scaler": {
      "title": "Aspect Ratio Calculator: Resize Resolution and Pixel Sizes",
      "desc": "Enter a ratio and a width or height to get the other side without distortion, reduce a pixel size to its simplest ratio, or start from common formats (16:9, 9:16, 4:3, 1:1, 4:5, 21:9).",
      "anchor": "Aspect ratio calculator"
    }
  }
}