Unit & Conversion Tools

10 Tools

Free, accurate, and instant online tools and calculators for unit & conversion tools. Run directly in your browser with zero configuration.

Length Converter

Convert between meters, kilometers, miles, feet, inches, centimeters, and many more length units.

Convert weight and mass between kilograms, pounds, grams, ounces, tons, and other units.

Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine with instant results.

Convert between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and beyond using binary or decimal prefixes.

Convert speed between km/h, mph, m/s, knots, and other velocity units for travel, physics, and engineering.

Convert between seconds, minutes, hours, days, weeks, months, and years with decimal precision.

Convert between square meters, square feet, acres, hectares, square kilometers, and many more area units.

Convert between liters, milliliters, gallons, pints, cups, cubic meters, and other volume units.

Convert any number to its English word representation. Useful for writing cheques or formal documents.

Convert between Arabic numerals and Roman numerals. Supports numbers from 1 to 3,999.