Daily Life

Simplify your everyday life calculations.

• Scientific Calculator & Function Grapher – Advanced scientific calculator, interactive function plotter, derivatives, numerical integrals, and equation solver for students.
• Pomodoro Timer: 25-Minute Focus Sessions and Breaks – Run 25-minute focus sessions, then take a 5-minute short break or a longer break, following the Pomodoro method.
• QR Code Generator: Custom Codes for Links, Wi-Fi and vCards – Create a QR code for a link, Wi-Fi network, vCard contact, email or SMS, pick colors, logo and size, then download it as PNG or SVG or copy the image.
• Password Generator: Strong Random Passwords – Choose length and character types: each password is drawn with your browser's cryptographic random generator.
• Calendar with US Federal Holidays and Moon Phases – Browse any month with the 11 US federal holidays, from MLK Day to Thanksgiving, holidays in 6 other countries and the moon phases.
• Date Calculator: Days Between Dates and Working Days – Count the days between two dates and the working days in the US or 6 other countries, add time to a date, or work out an exact age.
• Unit Converter: Length, Weight, Temperature and More – Pick a category and two units to convert a value, for example meters to feet or Celsius to Fahrenheit.
• Color Converter: HEX, RGB, HSL and CMYK with Contrast – Enter a color to get its HEX, RGB, HSL and CMYK values, its WCAG contrast with text and a matching palette.
• WebP to PNG, JPG or SVG Converter in Your Browser – Drop a WebP image and export it as lossless PNG or as JPG with adjustable quality, with no file upload.
• Stopwatch and Countdown Timer to the Hundredth – Start a stopwatch accurate to the hundredth of a second or set a countdown timer that shows the time left.
• Word Counter: Words, Characters and Reading Time – Paste your text to count words and characters and estimate the reading time at 200 words per minute.
• Case Converter: Uppercase, Lowercase, Title and camelCase – Paste text and turn it into uppercase, lowercase, capitalized words, camelCase or snake_case in one click.
• Roman Numeral Converter: Numbers to Roman and Back – Type a number to write it in Roman numerals, or a Roman numeral such as MCMXCIV to read it as a number.
• Zodiac Sign and Chinese Zodiac by Date of Birth – Enter your date of birth to find your sun sign, your Chinese zodiac animal and the element attached to it.
• US Bill Splitter & Tip Calculator: Pre or Post-Tax – 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.
• EU Flight Compensation Calculator (Regulation EC 261/2004) – Calculate up to €600 compensation per passenger for delayed (+3h), cancelled, or overbooked flights under EU passenger rights law.
• Schengen 90/180-Day Rule Calculator – Track multiple stays across 29 Schengen countries, avoid overstaying, and determine your maximum legal departure date.
• EU Roaming Fair Use Calculator: Data Allowance Abroad – Calculate your statutory minimum surcharge-free EU roaming data allowance using the official European Commission formula.
• EU Car Import Tax & CO2 / Weight Malus Calculator – Calculate total import duties, VAT, age-depreciated WLTP CO2 malus, and weight penalty when importing vehicles into France/EU.
• Deep Work Time Audit, Interruption Cost & Focus Ratio – Measure actual cognitive flow state hours after subtracting meetings and Slack pings, and calculate the annual cost of context switching.
• Unix Timestamp Converter: Epoch to Date, UTC and Local Time – Convert seconds/milliseconds timestamps into human readable dates, inspect live epoch clock, and run bulk conversions.
• UPS Runtime Calculator: Battery Backup Time and VA Sizing – Estimate blackout backup duration in minutes for connected hardware (PC, NAS, router) and compute recommended VA capacity.
• Regex Tester with Replace: Live Matches and Capture Groups – Test a JavaScript regex on your text: highlighted matches, positions, capture groups, replacement with $1 and $2, token explanations and ready-made patterns.
• Smart JSON Diff & Structural Comparison Tool – Compare two JSON objects side-by-side in real time with automatic validation, deep recursive structural diff, and formatting.
• College & High School GPA Calculator (Weighted / Unweighted) – Calculate semester and cumulative grade point average (GPA) on a 4.0 scale with honors/AP weighting and academic honors tracking.
• Discount and Sales Tax Calculator with Stacked Coupons – $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.
• Road Trip Gas Calculator: Fuel, Tolls and Cost Per Person – Estimate fuel, round-trip tolls, parking and optional wear for a road trip, then each passenger’s share, with or without the driver paying.
• Sensitivity Converter: CS2, Valorant, Apex and cm/360° – Accurately convert your mouse sensitivity between major FPS games (CS2, Valorant, Apex Legends, Overwatch) preserving muscle memory with cm/360°.
• Free Online Tarot Card Reading Simulator (22 Major Arcana) – Perform interactive tarot readings (3-Card Past-Present-Future, 5-Card Celtic Cross, or Yes/No answer) with comprehensive arcana interpretations.
• Numerology Calculator: Life Path and Personal Year Number – Calculate your Life Path Number, Expression Number, Soul Urge vibration, and current Personal Year using authentic Pythagorean numerology.
• Sun Moon Rising Calculator: Ascendant and Moon Sign – Estimate your Rising Sign (Ascendant), Sun & Moon signs with elemental balance (Fire, Earth, Air, Water) and personality synthesis.
• DnD Dice Calculator: 5e Advantage and Dice Pool Odds – Calculate exact hit probabilities against target DC / Armor Class, Advantage vs Disadvantage math, and multi-dice damage averages.
• Genshin Pull Calculator: Pity, Star Rail and WuWa Odds – 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.
• Zodiac Love Compatibility & Sun Sign Calculator – Calculate romantic chemistry, communication, passion and longevity between any two zodiac signs with elemental compatibility analysis.
• Bottleneck Calculator: CPU vs GPU Balance for PC Gaming – Determine if your CPU throttles your GPU in 1080p, 1440p, or 4K with projected competitive and AAA gaming FPS estimates.
• Mirror Hours & Angel Numbers Synchronicity Decrypter – Uncover the hidden spiritual meaning of mirror hours (11:11, 22:22), angel numbers (111, 777, 888), guardian angels, and tarology arcana.
• Poker Odds Calculator: Texas Hold'em Outs, Pot Odds and EV – 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).
• Elo Calculator: Rating Change and Win Probability – Compute Elo point shifts for wins, draws, and losses using the Elo expected-score formula and estimate your expected match win rate.
• Game Download Time Calculator: Steam, PS5, Xbox and PC – 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.
• Frame Time Calculator: Refresh Rate Hz vs FPS in ms – 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.
• Blackjack Basic Strategy Chart and Decision Trainer – Determine the mathematically optimal play for any hand vs dealer upcard according to basic strategy to minimize casino house edge.
• Nether Portal Calculator: Minecraft Overworld Coordinates – 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.
• Pokémon Weakness Calculator for Dual-Type Matchups – 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.
• RPG Damage Calculator: Armor, Crits and Average DPS – Enter base damage, armor, penetration and crit rate to get the real damage per hit and the expected average.
• Chinese Zodiac Calculator: Animal, Element and Yin/Yang – Find your authentic Chinese zodiac animal, elemental pillar (Wood, Fire, Earth, Metal, Water), Yin/Yang polarity, and secret hour animal.
• Chakra Test: 7 Chakras Balance and Solfeggio Frequencies – Assess your 7 chakras as described by tradition: self-rating from 1 to 5 per chakra, harmony score in % and the associated Solfeggio tones.
• Moon Phase Calculator: Illumination and Esoteric Rituals – Determine the approximate lunar phase, illumination percentage, and optimal manifestation rituals for any calendar date.
• Biorhythm Calculator: Physical, Emotional, Intellectual – 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.
• Healing Crystal Finder: Meanings, Chakras and Cleansing – Choose a crystal and see the properties tradition attributes to it (love, protection, abundance) and its water, moon or sun cleansing rituals.
• Tibetan Astrology Calculator: Mewa Birth Number and Color – Enter your birth year to get your Mewa, one of the 9 numbers of the Tibetan magic square, and its color.
• Enneagram 9 Personality Types & Wings Explorer – Explore the 9 Enneagram personality archetypes, instinctual centers (Gut, Heart, Head), deepest unconscious fears, and neighboring wings.
• Appliance Electricity Cost Calculator: kWh and CO2 per Year – Estimate the yearly kWh and electricity cost of each home appliance, standby included: water heater, heater, fridge, washer, TV, PC, plus the CO₂ footprint.
• Intermittent Fasting Schedule Calculator: 16:8, 18:6, OMAD – 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).
• Tile Calculator: Tile Boxes, Flooring, Paint and Wallpaper – 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.
• Coffee Ratio Calculator: V60, French Press, Espresso Recipes – Calculate exact coffee dose (g), water volume (ml), grind size and step-by-step pouring schedule for 7 brewing methods.
• Airline Baggage Size Checker: Cabin and Checked Bag Weight – Verify cabin and checked baggage compliance for 9 major airlines and estimate packing weights to avoid airport fees.
• Cups to Grams Converter, °F to °C and Cake Pan Calculator – 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.
• PPI Calculator: Screen Size, TV Viewing Distance and FOV – Find optimal 4K/OLED TV screen sizes and seating distances according to THX/SMPTE guidelines and calculate monitor pixel density (PPI).
• Unit Price Calculator: Compare Grocery Sizes and Deals – 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%.
• Houseplant Watering Schedule & Light Exposure Planner – Get tailored watering frequencies and light placement guidelines based on indoor plant species, pot material, and seasonal weather.
• Download Time Calculator and Home Bandwidth Sizer – Estimate exact download and upload durations for large files and size household bandwidth requirements for concurrent 4K streaming and remote work.
• Pet Food Calculator: Daily Portion and Calories (Dog, Cat) – Calculate estimated daily feeding portions in grams (kibbles or wet food) and veterinary caloric needs (RER × activity factor).
• Shoe Size Converter: US, EU, UK, JP and Clothing Sizes – Convert shoe pointures and apparel sizes between European, American, British, and Japanese standards with centimeter measurements.
• Book Reading Time, WPM Speed & Daily Goal Planner – 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.
• Smart Luggage Packing List & Travel Checklist Generator – Generate tailored packing checklists with exact clothing counts calculated for trip length, climate, laundry access, and activities.
• Tire Size Calculator: Equivalence and Speedometer Error – Check usual tire fitment tolerances (-2% to +1.5%, trade rule of thumb) and calculate speed discrepancies between dashboard and actual GPS speed.
• Food Expiry & Freezer Storage Guide – Indicative safe shelf life in refrigerator, maximum freezing duration, thawing safety rules, and temperature guidelines.
• Room Lighting Calculator: Lumens, Lux & Kelvin – Calculate required room lumens, lux standards, bulb wattage, and ideal color temperature (Kelvin) for any living space.
• TV Size & Optimal Viewing Distance Calculator – Calculate the perfect TV diagonal screen size (inches/cm) for your living room viewing distance based on THX & SMPTE cinema guidelines.
• Battery Charge Time & Power Bank Capacity Calculator – 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.
• Grass Seed Calculator: How Much Seed per m² for a Lawn – Work out the kilos of grass seed and bags of 1, 5 or 10 kg for your area: new lawn at about 35 g/m², overseeding at 20 g/m², fertiliser included.
• Towing Licence Calculator: Category B, B96 or BE? – Enter your car’s gross weight (F.2), gross train weight (F.3) and trailer weight to see whether a category B licence is enough or you need B96 or BE.
• Speed vs Fuel Cost Calculator: Is Driving Faster Worth It? – Compare two motorway speeds: minutes saved, extra litres and euros of fuel, cost per minute saved and CO₂, for example 110 vs 130 km/h.
• Wedding Drinks Calculator: How Much Wine, Champagne & Beer – A 75 cl bottle pours 6 glasses of 125 ml (7 to 8 of 100 ml). Work out champagne, wine, beer and soft drinks for your wedding from the guest count.
• Pet Food Analysis by Barcode: Dog and Cat Carb Estimate – Scan a bag of kibble: protein, fat, ash, fibre and moisture published by Open Pet Food Facts, plus carbohydrates estimated by difference.
• Fuel prices in France: cheapest petrol stations near you – Cheapest petrol stations around a French address for diesel, E10, SP98, E85 or LPG, from the official price feed, with the date and time of each price.
• French lycée bac results: pass rate, honours, value added – Baccalauréat pass rate, honours rate and value added for any French general or technological lycée, from the Ministry's official indicators.
• French school holidays by zone A, B, C: dates and countdown – Next French school holidays for zone A, B or C, Corsica and overseas, from the official Ministry calendar, with the number of days left.
• GPS Coordinates France: Address to Latitude and Longitude – Get the latitude and longitude of an address in France, or the address of a GPS point, in decimal degrees and degrees-minutes-seconds.
• Wikipedia summary of any topic: intro, image and link – Type a topic to get the introduction of its Wikipedia article, the short description and image, with attribution and a printable layout.
• Pokédex lookup: Pokémon base stats, types and weaknesses – Type a Pokémon to see its base stats, types, height and weight, plus calculated ×4 and ×2 weaknesses, resistances and immunities.
• Next public holiday countdown: 2026 list and bridge days – How many days until the next public holiday? Countdown, yearly list and bridge days for the US, UK, France, Germany, Spain, Italy and Brazil.
• ISBN lookup: find a book, check digit, ISBN-10 to 13 – Enter an ISBN: the tool validates the check digit, converts between ISBN-10 and ISBN-13 and shows title, author, publisher and cover from Open Library.
• Live earthquake map: latest earthquakes worldwide (USGS) – Latest earthquakes worldwide over 24 hours, 7 or 30 days: map, magnitude, depth, local time and distance from an address, from USGS data.
• Chess stats: Chess.com and Lichess player ratings – Enter a Chess.com or Lichess username: rating per time control (bullet, blitz, rapid), wins, draws and losses, win rate and a 12-month rating chart.
• Vélib' availability in real time: Paris stations near me – Vélib' mechanical bikes, e-bikes and free docks at stations around an address in Paris and Greater Paris, with data refreshed about every minute.
• EU customs allowance calculator: €430, tobacco and alcohol – Coming back from outside the EU? See what the €430 or €300 allowance covers, how much tobacco and alcohol you may bring, and what to declare.
• Motorway Vignette Calculator: Switzerland, Austria, Slovenia – Which vignette to buy for Switzerland, Austria and Slovenia? Enter your motorway days and get the cheapest combination with its validity dates.
• Horizontal Tank Volume Calculator with Dipstick Chart – Liquid left in a horizontal cylindrical tank from the dipstick height, with flat or dished heads and a printable gauge chart in 1-inch steps.
• Shiny odds calculator: Pokémon shiny chance by game – Work out shiny odds in every Pokémon game: 1 in 4,096 or 8,192, Shiny Charm, Masuda method, mass outbreaks, Legends: Z-A and Scarlet/Violet.
• Robux to USD calculator: price, DevEx rate and 30% fee – What 1,000 Robux cost in dollars, pesos or euros, what DevEx pays for earned Robux (0.0038 USD each) and the 30% fee on game passes, all editable.
• Minecraft Enchantment Order Calculator: Anvil Cost – Find the cheapest order to merge enchanted books on a Minecraft anvil, Java or Bedrock: level cost of each step, total, and the Too Expensive! limit.
• Fuel Injector Size Calculator: cc/min, lb/hr, E85, Pressure – Work out the injector flow you need in cc/min and lb/hr from power, cylinder count, fuel (gasoline or E85), duty cycle and fuel pressure.
• Generator Size Calculator: Running and Starting Watts, kVA – Size a generator in watts and kVA from your appliance list, with motor starting surges, power factor, a reserve margin and the best start order.
• Pokémon catch rate calculator: odds per ball, Gen 3 to 9 – Work out the chance of catching a Pokémon per throw by game (FireRed, Platinum… Gen 3 to 9), HP left, status and Poké Ball, plus throws for 90%.
• Pokémon IV calculator: FireRed, Emerald, Platinum, Gen 3-9 – Work out your Pokémon's IVs in FireRed, Emerald, Platinum or Scarlet from its stats, level, nature and EVs, with the Generation 3 to 9 formula.
• Celtic tree astrology calculator: find your birth tree – Find your Celtic tree from your birth day and month: Robert Graves's 13 lunar months or Paula Delsol's 21-tree circle, with the real origin of each.
• Egyptian zodiac calculator: your god by date of birth – Find your Egyptian zodiac deity from your birth day and month, in both tables that circulate online, with every date range and where the system comes from.
• Tarot birth card calculator: personality and soul cards – Work out your tarot birth cards with Mary K. Greer's method: month + day + year reduced to Major Arcana, giving your personality card and your soul card.
• Tibetan calendar today: Phugpa date converter and Losar – Convert any Gregorian date to the Tibetan Phugpa calendar: lunar month and day, leap months, skipped or doubled days and Losar dates from 1900 to 2100.
• Aztec zodiac sign calculator by date of birth – Find your Aztec zodiac sign from your date of birth: tonalpohualli day sign, number from 1 to 13, trecena and patron deity, with sources.
• Kua number calculator for male and female, after 2000 – Find your Kua number from the Chinese solar year (Lichun) and sex, with the after-2000 rule: East or West group, 4 good and 4 bad directions.
• Mayan birth sign calculator: Dreamspell kin and nawal – Find your Mayan kin and solar seal in the Dreamspell 13 Moon count, with tone, wavespell and oracle, plus your traditional tzolk'in nawal.
• Long division calculator: step by step with remainder – Work through long division step by step in the bracket, European or German layout, with each step explained, a remainder or decimals, and repeating digits.
• Mic test: input level, waveform and local recording – Test your mic in the browser: choose the input, see the dBFS level and waveform, record a clip to play back and read the real settings. Nothing is sent.
• Spin the wheel: random name picker with a fair draw – Type a list of names and spin the wheel: the browser's cryptographic generator picks the winner, with a draw history and an option to remove each winner.
• Sudoku: play, solve and generate unique-solution grids – Play sudoku by keyboard or touch with pencil marks, have any grid you type solved, and generate puzzles with a single solution, from easy to expert.
• Hiragana and katakana chart: stroke order and quiz – All 46 basic kana, dakuten kana and combinations in hiragana and katakana, with Hepburn romaji, animated stroke order and a reading quiz with score.
• Chess clock: time controls, Fischer increment and delay – A chess clock for phone or computer: bullet, blitz, rapid and classical presets, Fischer increment or FIDE delay, space bar, end-of-time sound and full screen.
• Padel americano generator: rotations, scores, standings – Run a padel americano for 4 to 24 players: rounds with rotating partners, courts, scores to 16, 21, 24 or 32 points and an individual leaderboard.
• Flashcard maker with spaced repetition (SM-2) and CSV import – Make two-sided flashcards in decks and review each one when it is due, scheduled by the SM-2 algorithm, with keyboard shortcuts and CSV import and export.
• Reaction time test: 5 trials with mean and median – Click as soon as the screen turns green: 5 trials timed to the millisecond, false starts detected, then your mean, median and benchmark from a published study.
• Decibel meter: A-weighted sound level from your mic – Measure sound level with your microphone: A-weighted dB, Fast or Slow response, maximum, Leq, a 60-second history and sourced exposure limits (WHO, NIOSH).
• Aquarium volume calculator: net gallons, weight and heater – Gross and net volume of a rectangular, cylinder, corner or bow front tank, minus glass, substrate and decor, in liters and US gallons, with filled weight.
• Aim trainer: static targets, tracking and accuracy – Shoot static targets or track a moving one for 15, 30 or 60 seconds: score, accuracy and average time per target, with optional Pointer Lock on desktop.
• Chess openings: explorer with ECO codes and variations – Play moves on the board or from the list to see the opening name and ECO code, the next book moves and their variations, search by name and copy the PGN.
• Dead pixel test: full-screen colors, gradients and grid – Fill your screen with 12 test patterns (black, white, red, green, blue, gradients, grid) to spot dead, stuck and hot pixels, backlight bleed and banding.
• Habit tracker: monthly grid, streaks and completion rate – Tick off your habits day by day on a monthly grid and see your current streak, best streak and monthly rate, with JSON backup and no account needed.
• Human Design chart: type, authority, profile and gates – Calculate your Human Design chart from birth date, time and time zone: 26 gate activations, channels, defined centers, type, authority and profile.
• Minecraft circle generator: ellipses, spheres and domes – Plan a Minecraft circle or ellipse block by block, filled or outlined, then a sphere or dome layer by layer, with the block count for every row and layer.
• Morse code translator with sound, light and practice mode – Translate text to Morse code and back with the ITU alphabet, play it as sound, light or vibration, set Farnsworth spacing and practise copying letters.
• Pickleball score keeper: doubles, singles and score calls – Keep score in pickleball: 0-0-2 start, server 1 or 2, correct serving side, games to 11 win by 2, undo, history and an optional spoken score call.
• 5e character sheet: point buy, modifiers, HP and skills – Build a 5e character sheet from the SRD 5.2.1: point buy or standard array, modifiers, proficiency, saving throws, skills, hit points, AC and a PDF export.
• Secret Santa generator: exclusions and one link per person – Draw who gives to whom, excluding couples and last year's pairs, then send each person a link that shows only their own recipient. No sign-up, no email.
• Smoking time calculator: brisket, pork, turkey, safe temps – Estimated smoker time by meat and weight, the start time to serve on schedule and USDA safe internal temperatures, kept apart from the doneness you prefer.
• Solar eclipse 2027: local times and totality by city – Start, maximum and end times of the 2 August 2027 eclipse in your city, length of totality, share of the Sun covered and a globe of the path of totality.
• Sourdough hydration calculator with baker's percentages – True dough hydration, salt and starter as baker's percentages with the starter's flour counted, recipe from percentages and amounts to feed your starter.