Unit Converter
Convert length, weight, temperature, area, volume, speed and time — with the conversion formula printed under the result.
About Unit Converter
Every category converts through a single base unit, so the maths stays exact instead of chaining approximations: metres for length, kilograms for weight, square metres for area, litres for volume, metres per second for speed and seconds for time. Type a value, pick the pair, and the result updates as you go — the swap button reverses the direction without retyping.
Temperature is the exception, since Celsius, Fahrenheit and Kelvin do not share a zero point. Those conversions use the affine formulas directly (C = (F − 32) × 5/9, F = C × 9/5 + 32, K = C + 273.15) rather than a ratio, which is why the formula panel is worth checking on cold numbers. The quick reference underneath shows the same value expressed in every other unit of the category.
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- Works entirely in your browser
- Your data never leaves your device
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