Common Unit Conversions
Length
- 1 inch = 2.54 centimetres
- 1 foot = 30.48 centimetres
- 1 mile = 1.609 kilometres
- 1 metre = 3.281 feet
Weight
- 1 pound = 0.4536 kilograms
- 1 kilogram = 2.2046 pounds
- 1 stone = 6.35 kilograms
- 1 ounce = 28.35 grams
Temperature
- °C to °F: multiply by 9/5 then add 32
- °F to °C: subtract 32 then multiply by 5/9
- °C to K: add 273.15
- 0°C = 32°F = 273.15K (freezing)
- 100°C = 212°F (boiling)
- 37°C = 98.6°F (body temperature)
FAQs
How do I convert cm to inches?
Divide centimetres by 2.54 to get inches. For example, 30 cm ÷ 2.54 = 11.81 inches. Alternatively, multiply centimetres by 0.3937.
How do I convert kg to pounds?
Multiply kilograms by 2.2046 to get pounds. For example, 70 kg × 2.2046 = 154.3 lbs. To go from pounds to kg, divide by 2.2046.
What is 100°C in Fahrenheit?
100°C is 212°F — the boiling point of water at sea level. Use the formula: (100 × 9/5) + 32 = 212°F.
How many litres are in a gallon?
1 US gallon = 3.785 litres. 1 UK (imperial) gallon = 4.546 litres. The UK and US gallon are different sizes.