Unit Converter
Convert between common units of measurement.
Updated
Unit Conversion Reference
This converter handles length, weight/mass, temperature, volume, speed, and area conversions. All conversions use standard international factors.
Frequently Asked Questions
How many centimetres are in an inch?
Exactly 2.54 centimetres. To convert inches to centimetres multiply by 2.54; to go the other way, divide by 2.54.
How do I convert kilograms to pounds?
Multiply kilograms by 2.20462. So 75 kg is about 165.3 lbs. To convert pounds to kilograms, divide by 2.20462.
Is a US gallon the same as an imperial gallon?
No. A US gallon is about 3.785 litres while an imperial (UK/Canada) gallon is about 4.546 litres — roughly 20% larger.
Why does Canada use both metric and imperial units?
Canada officially adopted the metric system in the 1970s, but imperial units persist in daily life — height in feet, weight in pounds, ovens in Fahrenheit — largely due to US influence and habit.