Convert between length, weight, temperature, and volume units. Click any result to convert from that unit.
Frequently Asked Questions
How many centimetres are in an inch?
There are exactly 2.54 centimetres in one inch. To convert inches to centimetres multiply by 2.54; to go the other way divide by 2.54.
How many litres are in a gallon?
A US gallon is approximately 3.785 litres. A UK (Imperial) gallon is larger at approximately 4.546 litres. Always check which type of gallon is being used — the difference is about 20%.
How do you convert Celsius to Fahrenheit?
Multiply by 1.8 and add 32. Formula: °F = (°C × 1.8) + 32. For example, 100°C = 212°F, and 0°C = 32°F. To reverse: °C = (°F − 32) ÷ 1.8.
How many pounds are in a kilogram?
One kilogram equals approximately 2.205 pounds. To convert kg to lbs multiply by 2.205; to convert lbs to kg divide by 2.205 (or multiply by 0.4536).
What is the difference between US and Imperial measurements?
The US and Imperial systems share unit names but differ in size for volume. A US gallon is 3.785 L; an Imperial gallon is 4.546 L. A US fluid ounce is 29.57 mL; an Imperial fluid ounce is 28.41 mL. Weight units (pounds, ounces) are the same in both systems.