Length Converter
Length conversions most commonly involve switching between the metric system (millimetres, centimetres, metres, kilometres) and the imperial system (inches, feet, yards, miles). The metric system is the international standard, used in most countries. The imperial system is used primarily in the United States, with some units still in everyday use in the UK.
Key definitions: one inch is defined as exactly 25.4 millimetres by international agreement since 1959. One mile equals exactly 1,609.344 metres. One foot equals exactly 12 inches or 30.48 centimetres.
Also try: Weight Converter · Temperature Converter · Volume Converter · Speed Converter · Area Converter · Data Storage Converter · Cooking Converter
Frequently Asked Questions
How many cm in an inch?
There are exactly 2.54 centimetres in one inch. The inch was redefined in 1959 by international agreement as exactly 25.4 mm. To convert inches to centimetres, multiply by 2.54. For example, 5 inches = 12.7 cm. Conversely, divide centimetres by 2.54 to get inches.
How many feet in a metre?
One metre equals 3.28084 feet. To convert metres to feet, multiply by 3.28084. To convert feet to metres, multiply by 0.3048. For a quick rough estimate, 1 metre ≈ 3 feet 3 inches.
How many miles in a kilometre?
One kilometre equals 0.621371 miles. One mile equals 1.60934 kilometres. A useful rough conversion: 8 km ≈ 5 miles, or 5 miles ≈ 8 km.
How many inches in a foot?
There are exactly 12 inches in one foot. One foot equals 30.48 centimetres or 0.3048 metres. There are 3 feet in one yard and 5,280 feet in one mile.