Calculators, converters and generators. Free, fast, private.
459 tools for money, health, dates, math, files and everyday life. No sign-up — everything runs in your browser wherever it can.
Money, health, dates, math and everyday numbers — answered in seconds.
- Finance & Loans · 41
- Salary & Work · 9
- Health & Nutrition · 38
- Fitness & Sports · 16
- Math & Statistics · 24
- Dates & Time · 20
- Home & Construction · 34
- Cooking & Parties · 21
- Cars, Travel & Weather · 22
- Shopping & Everyday · 10
- Tech & Internet · 11
- School & Grades · 9
- Business & AI · 4
Age CalculatorPopularExact age in days, weeks and years. Days until next birthday.Days Between DatesPopularCalculate days, weeks, months between two dates.Betting CalculatorPopularProfit, odds converter, bookmaker margin and value bet — all in one.Compound InterestPopularCompound interest — calculate investment or savings growth yearly.Savings CalculatorPopularTrack savings growth with monthly deposits and compound interest.BMI CalculatorPopularCalculate BMI and ideal weight. Colour-coded classification.Calorie CalculatorPopularDaily calorie needs (TDEE) and basal metabolic rate (BMR).TDEE CalculatorPopularFree TDEE calculator: find your total daily energy expenditure with the Mifflin-St Jeor equation
Convert files, units, time and text. Files stay on your device wherever the browser can do the job.
- PDF Tools · 43
- Image Converters · 25
- Audio Converters · 16
- Video Converters · 16
- Document Converters · 5
- Data & Spreadsheets · 9
- Archives, Ebooks & Fonts · 8
- Units & Measurements · 14
- Time Converters · 3
- Text & Code Converters · 9
Unzip OnlinePopularOn-deviceOpen a ZIP and pick out the files you need.TTF to WOFF2PopularOn-deviceDesktop fonts to compact WOFF2 web fonts.MP4 to MP3PopularPull the audio out of a video as an MP3.WAV to MP3PopularOn-deviceUncompressed WAV to compact MP3 (about 10× smaller).M4A to MP3PopularOn-deviceVoice memos and iTunes M4A to universal MP3.Audio ConverterPopularOn-deviceAny audio format to any other, with bitrate control.Video to MP3PopularOn-deviceAny video file to an MP3 of its soundtrack.MP3 CutterPopularOn-deviceCut a section out of an MP3 by start and end time.
Random numbers, names, passwords, words and party games.
Name GeneratorPopularFind the perfect baby name. Style, rarity and nationality filters.Password GeneratorPopularStrong random passwords with cryptographic RNG.Dice RollerPopularRoll d4, d6, d8, d10, d12 or d20 — 1–10 dice at once.Random Name PickerPopularEnter names or options and draw a winner from the list.Random Number GeneratorPopularGenerate a number or multiple numbers in any range.Wheel SpinnerPopularFree spinning wheel picker: type your own options, spin the wheel and let chance decideRandom Word GeneratorFree random word generator with 600 real English wordsTracklist GeneratorBuild a tracklist for a DJ mix or compilation, ready for the YouTube description
Text tools, speed tests, creator earnings and small games.
YouTube Money CalculatorPopularFree YouTube money calculator: paste a video link or enter views — estimates ad earnings aCPS TestPopularFree CPS test: measure your clicks per second in 1, 5, 10 or 30-second modesLove CalculatorPopularFree love calculator: enter two names and get a compatibility percentage with a fun verdictReaction Time TestPopularFree reaction time test: click when the box turns greenCharacter CounterPopularSee how your text fits within social media character limits and how many characters rem…Word CounterPopularFree word counter with live stats: words, characters with and without spaces, sentences, pAd Revenue CalculatorEstimate website ad income with AdSense, Ezoic, Mediavine and Raptive.BPM CounterFree BPM counter: tap the button (or your spacebar) to the beat and get the tempo in BPM i
Popular right now
Age CalculatorPopularExact age in days, weeks and years. Days until next birthday.Days Between DatesPopularCalculate days, weeks, months between two dates.Betting CalculatorPopularProfit, odds converter, bookmaker margin and value bet — all in one.Compound InterestPopularCompound interest — calculate investment or savings growth yearly.Savings CalculatorPopularTrack savings growth with monthly deposits and compound interest.BMI CalculatorPopularCalculate BMI and ideal weight. Colour-coded classification.Calorie CalculatorPopularDaily calorie needs (TDEE) and basal metabolic rate (BMR).TDEE CalculatorPopularFree TDEE calculator: find your total daily energy expenditure with the Mifflin-St Jeor equationPercentage CalculatorPopularPercentage of a number, percentage change, increase and decrease.GPA CalculatorPopularFree GPA calculator: enter your courses, letter grades and credit hours to calculate your Grade CalculatorPopularFree grade calculator: enter your assignment grades and weights to find your weighted clasTip CalculatorPopularCalculate tip and split the bill among multiple people.
Looking for something specific? Browse all 459 tools A–Z →
Why CalcBrew?
CalcBrew is the international, English-language sister site of Nopealaskuri.fi, one of Finland’s largest calculator services. Every tool is free, needs no account and shows its working. Calculations and browser-based conversions never leave your device; the few conversions that need a server are processed in the EU and deleted within an hour.
Tools that depend on national rules (some salary and tax calculators) say so on the page; everything else is country-neutral or built for US users.