Unit Converter
Convert length, weight, volume, area, and speed between all common units.
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Common conversions — Length
Frequently Asked Questions
How many centimetres are in an inch?↓
1 inch = 2.54 centimetres exactly. To convert inches to centimetres, multiply by 2.54. For example, 5 inches = 12.7 cm.
How do I convert kg to lbs?↓
1 kilogram = 2.20462 pounds. To convert kg to lbs, multiply by 2.20462. For example, 70 kg = 154.32 lbs.
How many kilometres is a mile?↓
1 mile = 1.60934 kilometres. To convert miles to km, multiply by 1.60934. To convert km to miles, multiply by 0.62137.
How many litres in a gallon?↓
1 US gallon = 3.78541 litres. 1 UK (imperial) gallon = 4.54609 litres. The US and UK gallon are different units, so it is important to specify which one you mean.
How do I convert mph to km/h?↓
1 mph = 1.60934 km/h. To convert miles per hour to kilometres per hour, multiply by 1.60934. For example, 60 mph = 96.56 km/h.
How many square feet in an acre?↓
1 acre = 43,560 square feet. To convert acres to square feet, multiply by 43,560.
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