ScanSpotUnit Converter
Convert units instantly.
Weight, length, temp, volumePrecise resultsCommon presets
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📐 Unit Converter
Convert between metric and imperial units.
Convert between units of length, weight, temperature, volume and more. Type a value once and every other unit in the category updates at the same time.
How to use the Unit Converter
- Pick a category such as length, weight or temperature.
- Enter a value in any of the fields.
- Every other unit updates instantly, ready to copy.
Why people use it
- Answers the everyday conversion — kilometres to miles, kilograms to pounds, Celsius to Fahrenheit — without a search.
- Shows every unit in the category at once, so you do not have to guess which conversion you need.
- Uses precise conversion factors rather than rounded rules of thumb.
Frequently asked questions
How do temperature conversions work?
They are affine rather than multiplicative, which is why Celsius and Fahrenheit need an offset. 0 °C is 32 °F, and a difference of one degree Celsius equals 1.8 degrees Fahrenheit.
Is a US gallon the same as a UK gallon?
No. A US gallon is about 3.785 litres and an imperial gallon about 4.546 litres — roughly 20 percent larger. The tool labels them separately for that reason.
Why is a kilogram not exactly 2.2 pounds?
It is 2.20462262 pounds. The 2.2 figure is a rounding used for mental arithmetic; this tool uses the exact factor.