Length Converter
Convert meters, feet, inches, centimeters, kilometers, miles and more.
Unit & Number Converters
12 free tools
Convert length, weight, temperature, area, volume, speed, time and data sizes, switch number bases, write numbers as words or Roman numerals and turn text into binary.
All 12 unit & number converters
Weight Converter
Convert kilograms, pounds, grams, ounces, stones and tons.
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin and Rankine instantly.
Area Converter
Convert square meters, square feet, acres, hectares, marla and kanal.
Volume Converter
Convert liters, gallons, milliliters, cups, fluid ounces and cubic meters.
Speed Converter
Convert km/h, mph, meters per second, knots and feet per second.
Time Converter
Convert seconds, minutes, hours, days, weeks, months and years.
Data Storage Converter
Convert bytes, KB, MB, GB, TB and binary units like MiB and GiB.
Text to Binary Converter
Convert text to binary, hex, octal or decimal codes and back.
Roman Numeral Converter
Convert numbers to Roman numerals and back.
Number to Words
Spell out numbers in English words, including check-writing format.
Number Base Converter
Convert numbers between binary, octal, decimal, hex and any base.
Practical guides
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How to Use Length Converter
Convert length and distance between meters, feet, inches, centimeters, kilometers, miles, yards and more, with a quick reference table. Free length converter.
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How to Use Weight Converter
Convert weight and mass between kilograms, pounds, grams, ounces, stones, tons and carats instantly, with a reference table. Free kg to lbs converter.
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How to Use Temperature Converter
Convert temperatures between Celsius, Fahrenheit, Kelvin and Rankine instantly, with the formula and a reference table. Free temperature converter.
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How to Use Area Converter
Convert area between square meters, square feet, acres, hectares, square kilometers, marla and kanal. Free area and land size converter with reference table.
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How to Use Volume Converter
Convert volume between liters, milliliters, US and UK gallons, cups, fluid ounces, teaspoons and cubic meters instantly. Free volume converter.
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How to Use Speed Converter
Convert speed between kilometers per hour, miles per hour, meters per second, knots, feet per second and Mach instantly. Free speed converter.
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