Unit Converter
Convert length, weight, area, volume, and speed
What is Unit Converter?
A general unit converter covers five categories — length, weight, area, volume, and speed. Enter one value with its unit and every other unit in that category is converted at once, including regional units such as the Chinese jin (500 g) and mu (about 666.7 m²). Conversion happens locally in your browser.
How to use Unit Converter
- 1Choose a category.
- 2Enter a value and select its unit.
- 3Read whichever unit you need from the results list.
Frequently asked questions
Why is there no temperature conversion?+
Temperature is not a simple ratio: converting Celsius to Fahrenheit needs an offset applied before a factor, so it cannot live in the same proportional table as the other categories. Folding it in would make both the implementation and the results look untrustworthy, so it is deliberately left out.
Which definition of the imperial units is used?+
The international definitions — 1 inch = 25.4 mm exactly, 1 pound = 0.45359237 kg exactly. The US survey foot differs by a vanishingly small amount and only matters in geodetic surveying.
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