Small tools.
Big time savings.

Fast, private utilities for the things you need to get done. No accounts, no clutter — most tools run entirely in your browser.

Popular

Percentage CalculatorCalculate percentages, changes and shares.Mortgage CalculatorEstimate your monthly mortgage payment.Loan CalculatorCalculate loan payments and total interest.Compound Interest CalculatorSee how savings grow over time.Tip CalculatorCalculate tips and split the bill.JSON FormatterFormat, validate and minify JSON.UUID GeneratorGenerate v4 and v7 UUIDs instantly.Word CounterCount words, characters and reading time.Random Number GeneratorGenerate random numbers in a range.Online TimerA simple countdown timer.

Calculators

Everyday math without the mental arithmetic — percentages, ages, ratios, discounts and dates.

Percentage CalculatorCalculate percentages, changes and shares.Age CalculatorCalculate exact age from a birth date.Ratio CalculatorSimplify, scale and solve ratios.Discount CalculatorCalculate sale prices and savings.Date Difference CalculatorDays, weeks and months between dates.

Finance Calculators

Plan payments and interest with confidence — mortgages, loans, savings, tips and tax, all worked out instantly.

Mortgage CalculatorEstimate your monthly mortgage payment.Loan CalculatorCalculate loan payments and total interest.Compound Interest CalculatorSee how savings grow over time.Tip CalculatorCalculate tips and split the bill.Sales Tax CalculatorAdd or remove sales tax from a price.

Developer Tools

Format, encode, decode and generate. Fast utilities that run in your browser, so your data stays put.

JSON FormatterFormat, validate and minify JSON.UUID GeneratorGenerate v4 and v7 UUIDs instantly.Base64 Encoder / DecoderEncode and decode Base64 text.URL Encoder / DecoderPercent-encode and decode URLs.Unix Timestamp ConverterConvert Unix time to dates and back.

Text Tools

Count, compare, clean and convert text. Built for writers, editors and anyone working with words.

Word CounterCount words, characters and reading time.Character CounterCount characters against common limits.Text Case ConverterConvert text between letter cases.Text DiffCompare two texts and see the changes.Remove Duplicate LinesDelete duplicate lines from a list.

Time & Random

Timers, stopwatches and fair random generators — for focus sessions, games and decisions.

Random Number GeneratorGenerate random numbers in a range.Coin FlipFlip a fair virtual coin.Dice RollerRoll dice with any number of sides.Online TimerA simple countdown timer.StopwatchPrecise stopwatch with lap times.