Free Online Tools &
Calculators
Fast, free tools that work instantly in your browser. No signup. No ads. Just results.
Age Calculator
Find your exact age in years, months, and days
Number Base Converter
Convert numbers between any bases — binary, octal, decimal, hex, and more
Base64 Encoder / Decoder
Encode and decode Base64 and URL-encoded strings instantly
BMI Calculator
Calculate your Body Mass Index instantly
BMR & TDEE Calculator
Find your daily calorie burn and set the perfect target for your goal
Body Fat Percentage Calculator
Calculate your body fat % using the US Navy measurement method
Budget Calculator
Create your personal budget easily.
Compound Interest Calculator
See how your money grows over time with compound interest
Crypto Market Cap Comparator
If coin X reached coin Y's market cap, what would its price be?
Currency Converter
Convert currencies with live exchange rates
Debt Repayment Calculator
Plan your debt repayment strategy.
Online Diff Checker
Compare two texts, files, or code snippets side by side
Emoji Picker
Search, copy, and use any emoji instantly
GPA Calculator
Calculate your GPA instantly from letter grades or percentages
Holiday Calculator
Find public holidays and calculate days until the next one
Ideal Weight Calculator
Find your ideal weight using 4 medical formulas + healthy BMI range
Investment Return Calculator
Estimate your investment returns.
JSON & CSV Formatter / Validator
Format, validate, and convert JSON and CSV instantly in your browser
Loan Calculator
Calculate monthly payments, total interest, and amortization schedule
Ovulation & Cycle Tracker
Predict fertile window, ovulation date, and next period
Password Generator
Generate strong, secure passwords instantly
Percentage Calculator
Calculate percentages, increases, decreases, and more
Position Size Calculator
Never risk more than you can afford — calculate the perfect position size
QR Code Generator
Generate a QR code for any text or URL instantly
Random Number Generator
Generate truly random numbers instantly — single, list, or dice
Retirement Savings Calculator
Plan your retirement savings effortlessly.
Running Pace Calculator
Calculate your running pace, speed, and finish time
Sleep Calculator
Find the best time to wake up or go to sleep
Income Tax Calculator
Calculate income tax for USA, UK, Canada, Australia and more
Text Case Converter
Convert text to uppercase, lowercase, title case, camelCase, and more
Tip Calculator
Calculate tip amount and split the bill instantly
Take Profit / Stop Loss Calculator
Calculate your exact PnL, R:R ratio and liquidation price before you trade
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates instantly
Daily Water Intake Calculator
How much water should you drink per day? Find your personalized target
Word Counter
Count words, characters, sentences, and reading time
All tools run 100% in your browser · No data stored · No account required