Length Converter
Enter a value and select units to convert between metric and imperial length measurements.
How Length Converter works
Metric length units
The metric system uses powers of 10: 10 mm = 1 cm; 100 cm = 1 m; 1,000 m = 1 km. The metre is the SI base unit of length.
Imperial length units
12 inches = 1 foot; 3 feet = 1 yard; 1,760 yards = 1 mile. The UK uses both metric and imperial in everyday life: road distances in miles, heights in feet and inches, fabric in metres.
Key conversions
1 inch = 2.54 cm exactly. 1 foot = 30.48 cm. 1 mile = 1.60934 km. 1 metre = 3.28084 feet.
Frequently asked questions
How many cm in an inch?
Exactly 2.54 cm. So 1 inch = 2.54 centimetres.
How many feet in a metre?
1 metre = 3.28084 feet. Or conversely, 1 foot = 0.3048 metres.
How many miles in a kilometre?
1 km = 0.621371 miles. Or 1 mile = 1.60934 km.
What is the difference between a yard and a metre?
A metre is slightly longer than a yard. 1 metre = 1.09361 yards. 1 yard = 0.9144 metres.
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