How to use the Unit Converter
- Choose a category such as length or weight.
- Enter a value and pick the units to convert from and to.
- See the answer plus conversions to every other unit.
About this tool
The US uses imperial units (miles, pounds, Fahrenheit) while most of the world uses metric (kilometers, kilograms, Celsius). This converter bridges the two for travel, cooking, shopping, school and work.
Handy conversions
- 1 inch = 2.54 cm
- 1 mile = 1.609 km
- 1 kg = 2.205 lb
- °F = °C × 9/5 + 32
- 1 US gallon = 3.785 liters
Frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. 25°C = 77°F.
How many pounds in a kilogram?
1 kg ≈ 2.20462 lb.
Is a US gallon the same as a UK gallon?
No. A UK (imperial) gallon is about 4.546 liters; a US gallon is 3.785 liters.