Unit Converter
Comprehensive unit converter supporting 17 categories including length, mass, volume, temperature, speed, pressure, energy, and more. Convert between 188 different units with precision.
1 = 0
Decimal units: Use powers of 1000 (KB, MB, GB)
Binary units: Use powers of 1024 (KiB, MiB, GiB)
Storage manufacturers typically use decimal, while operating systems use binary.
About Unit Converter
Converting between units sounds trivial until you hit the cases that trip people up — temperature, where Celsius and Fahrenheit don't share a zero; digital storage, where a kilobyte can mean 1000 or 1024 bytes; or fuel economy, where miles-per-gallon and litres-per-100km move in opposite directions. Getting these right by hand means remembering the exact factor and the formula, and one slip changes the answer entirely.
This converter covers 17 categories and 188 units — length, mass, volume, temperature, speed, pressure, energy, area, time, angle, frequency, data, and more — and applies the correct factor or formula for each. Pick a category, choose the source and target units, type a value, and the converted result appears immediately with sensible precision so you don't lose accuracy to rounding.
All conversions run locally in your browser. There's no network call, so it's fast, works offline once loaded, and the values you enter never leave your device.
How to use Unit Converter
Choose a category
Select what you're converting — length, mass, volume, temperature, speed, and so on — from the 17 available categories.
Pick the source and target units
Set the unit you're converting from and the unit you want the result in.
Enter a value
Type the amount to convert. The result updates instantly using the correct factor or formula for that category.
Read the precise result
Use the converted value directly, or switch units to compare the same amount across several scales.
Frequently asked questions
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