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Quick Conversion Formulas
1 foot
= 12 inches = 0.3048 meters
1 mile
= 1.60934 km = 5,280 feet
1 meter
= 3.28084 ft = 39.3701 inches
1 nautical mile
= 1.852 km = 1.15078 miles
1 yard
= 3 feet = 0.9144 meters
1 inch
= 2.54 cm = 25.4 mm
Length Unit Conversion Guide
Also searched as: length converter online free | km to miles converter | feet to meters converter | inches to cm converter Optimized for US users with American units and terminology.
The metric system uses the meter as its base unit, with prefixes for larger and smaller scales: a kilometer (km) is 1,000 meters, a centimeter (cm) is 1/100 of a meter, and a millimeter (mm) is 1/1,000. The imperial system used in the United States uses inches, feet, yards, and miles. One foot equals exactly 0.3048 meters by international definition since 1959.
Use the Length Converter above — enter your values and get instant results. This free online tool calculates km to miles converter without any download or signup required. Results update in real time as you type.
Use the Length Converter above — enter your values and get instant results. This free online tool calculates feet to meters converter without any download or signup required. Results update in real time as you type.
One mile equals exactly 5,280 feet, or 1,760 yards. The US mile (statute mile) equals 1.609344 kilometers exactly. A nautical mile is different — it equals 1,852 meters (1.15078 statute miles), and is based on one minute of arc of latitude.
A light-year is the distance light travels in one year — about 9.461 × 10¹⁵ meters (9.461 trillion kilometers). The nearest star to our Sun, Proxima Centauri, is about 4.24 light-years away. Despite its name, a light-year is a distance, not a time.