Length Converter

Convert between meters, feet, miles, km, inches, and more.

Click any unit row to enter values in that unit.

Precision
Metric
Kilometer km
Meter m
Centimeter cm
Millimeter mm
Micrometer um
Nanometer nm
Imperial
Mile mi
Yard yd
Foot ft
Inch in
Nautical
Nautical Mile nmi
Fathom fth
Astronomy
Light Year ly
AU AU
Common Object References
ObjectMetricImperial
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Frequently Asked Questions

How many feet are in a meter?

1 meter = 3.28084 feet. 1 foot = 0.3048 meters exactly. Quick approximation: multiply meters by 3.28 to get feet, or divide feet by 3.28 to get meters.

How many kilometers are in a mile?

1 mile = 1.60934 kilometers. 1 kilometer = 0.621371 miles. Quick rule of thumb: multiply miles by 1.6 for km, or multiply km by 0.62 for miles. A 5K race is approximately 3.1 miles.

How many centimeters are in an inch?

1 inch = 2.54 centimeters exactly. 1 centimeter = 0.393701 inches. To convert height from feet+inches to cm: multiply total inches by 2.54. For example, 5 feet 10 inches = 70 inches × 2.54 = 177.8 cm.

What is a nautical mile and how does it differ from a regular mile?

A nautical mile is 1,852 meters (1.852 km or 1.15078 statute miles). It is defined as one arcminute of latitude along any meridian, which makes it useful in navigation. Aircraft and ships measure distance in nautical miles and speed in knots (nautical miles per hour).