Unit Converter
Convert length, weight and distance between metric and imperial units.
About the Unit Converter
The unit converter converts between common measurement units — length, weight, volume, area and speed. Enter a value and see all equivalent units simultaneously.
How to use the Unit Converter
Metric and imperial explained
Most of the world measures in metric — metres, kilograms, litres — while the UK and US still use imperial units like miles, pounds and gallons for many everyday things. The converter bridges the two, handling the conversions people meet most: kilometres to miles, kilograms to pounds, litres to gallons, and Celsius to Fahrenheit.
What you can convert
The tool covers the main everyday categories — length, weight, volume, area and speed — each with its common metric and imperial units. Pick a category, type a value, and every equivalent updates at once, so you can read off whichever unit you need without doing the arithmetic yourself.
Getting accurate results
Convert in one step rather than chaining estimates, and watch the rounding — a figure rounded too early drifts off over several conversions. Note too that a UK gallon is larger than a US gallon, so pick the right one when converting volumes.
Quick conversions worth remembering
A handful of factors cover most everyday needs: a mile is roughly 1.6 kilometres, a kilogram is about 2.2 pounds, a litre is a little under two UK pints, a metre is just over three feet, and 0°C is 32°F while 100°C is 212°F. The converter always gives the exact figure, but rough ratios like these are handy for quick mental estimates when you are away from a screen.
Frequently Asked Questions
How to Use This Unit Converter
Convert between all major units of measurement — length, weight, volume, area, speed and temperature. Select a category, choose your input unit and output unit, then enter a value. Results update instantly.
Common unit conversions
- 1 kilometre = 0.621 miles = 1,000 metres
- 1 kilogram = 2.205 pounds = 1,000 grams
- 1 litre = 0.264 US gallons = 1.76 UK pints
- 1 inch = 2.54 centimetres
- 1 mile = 1.609 kilometres
Why unit conversion matters
The UK uses a mix of metric and imperial — distances in miles, weights in both kilograms and stone/pounds, liquids in litres for fuel but pints for beer. This converter handles all combinations used in everyday UK, US and international contexts.