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Free online calculators for math, finance, health, and more. Fast, accurate, works on any device.
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Math
Percentage, ratio, average, and algebra calculators.
Finance
Compound interest, loan EMI, ROI, and savings calculators.
Health & Fitness
BMI, calorie, body fat, and macros calculators.
Date & Time
Days between dates, age calculator, and timezone tools.
Text & Writing
Word counter, case converter, lorem ipsum, and more.
Unit Converters
Length, weight, temperature, speed, and area converters.
Developer Tools
JSON formatter, Base64, URL encoder, regex tester.
All Tools
Length Converter
SoonConvert between metres, feet, inches, miles, and more.
Temperature Converter
SoonConvert between Celsius, Fahrenheit, and Kelvin.
JSON Formatter
SoonFormat, validate, and minify JSON.
Base64 Encoder / Decoder
SoonEncode and decode Base64 strings instantly.
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Free Tools for Everyday Calculations
Toolset is a growing library of free, browser-based calculators and utilities. Whether you need to work out a percentage, calculate compound interest, or convert units, you'll find a fast, accurate tool here — no account, no ads, no tracking.
Every tool is built with precision and clarity in mind. Formulas are shown alongside results so you always understand what's being calculated. Tools work on mobile, tablet, and desktop equally well.