Units Tools

Free unit converters for length, weight, temperature, volume, area, speed, data and time — plus direct pages for common conversions like lb to kg and cm to inches.

9 tools

Unit Converter

Every measurement in one place — length, weight, temperature, volume, area, speed, data and time.

Length Converter

Convert metres, feet, inches, miles, yards and more — instantly, in your browser.

Weight Converter

Convert kilograms, pounds, ounces, stones and tonnes with one tap.

Temperature Converter

Convert Celsius, Fahrenheit and Kelvin, with the formula shown.

Volume Converter

Convert litres, gallons, cups, pints, spoons and fluid ounces.

Area Converter

Convert square metres, square feet, acres, hectares and square miles.

Speed Converter

Convert km/h, mph, knots, feet per second and metres per second.

Data Size Converter

Convert bytes, KB, MB, GB and TB — including the 1024-based binary units.

Time Converter

Convert milliseconds, seconds, minutes, hours, days, weeks and years.