How to use the Unit Converter
- Choose a category such as length or weight.
- Type a value and pick the unit you are converting from.
- See the value in every other unit. Click any result to copy it.
Formula used
Every unit is converted to a base unit (metre, kilogram, square metre, litre and so on) and then to the target unit. Temperatures use offset formulas:
°F = °C × 9/5 + 32 · K = °C + 273.15Worked examples
| From | To |
|---|---|
| 5 feet 10 inches | 177.8 cm |
| 1 kg | 2.20462 lb |
| 11 stone | 69.85 kg |
| 37 °C | 98.6 °F |
| 10 miles | 16.09 km |
| 1 US gallon | 3.785 litres |
Frequently asked questions
How many cm is 5 feet?
152.4 cm. Each extra inch adds 2.54 cm, so 5 ft 6 in is 167.64 cm.
How many pounds are in a stone?
14 pounds, or 6.35 kg. Stones are still used for body weight in the UK and Ireland.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5 and add 32. 30 °C is 86 °F.
Is a US gallon the same as a UK gallon?
No. A US gallon is 3.785 litres and a UK imperial gallon is 4.546 litres, so UK miles-per-gallon figures look higher.
How many MB are in a GB?
In decimal units, 1 GB = 1,000 MB. In binary units, 1 GiB = 1,024 MiB, which is what Windows shows as "GB".
Our team builds and tests every tool by hand, checks each formula against official sources (IRS, HMRC, the Income Tax Department of India, CBSE, NHS, WHO) and reviews pages whenever rules change. Last reviewed on . Spotted a mistake? Tell us.