Kilometers to miles converter
Provide a length below to convert kilometers (km) to miles (mi). For the reverse direction, visit the miles to kilometers converter.
1 kilometer equals approximately 0.621371 miles. This conversion factor is derived from the international definition where 1 mile equals exactly 1.609344 kilometers.
To convert kilometers to miles, multiply the measurement in kilometers by 0.621371. To convert miles to kilometers, multiply the value in miles by 1.609344.
Kilometer
Definition: A kilometer (symbol: km) is a metric length unit equal to 1,000 meters. It is part of the International System of Units (SI) and is one of the most commonly used units for measuring longer distances.
History: The kilometer derives from the French "kilomètre," introduced during the development of the metric system in the late 18th century. The prefix "kilo-" means one thousand, so one kilometer represents one thousand meters.
Current use: Kilometers are used worldwide in countries that have adopted the metric system, particularly for measuring road distances, geographic distances, and in many other applications requiring longer length measurements.
Mile
Definition: A mile (symbol: mi) is a unit of length in the imperial and US customary systems. The international mile is defined as exactly 1.609344 kilometers, or 5,280 feet.
History: The mile has ancient origins, with the Roman "mille passus" (thousand paces) being one of its earliest forms. Throughout history, various definitions of the mile existed until the international mile was standardized in 1959.
Current use: Miles remain the primary unit for road distances in the United States, the United Kingdom, and several other countries. They are commonly used in transportation, athletics (particularly track and field), and everyday distance measurements in these regions.
| Kilometer [km] | Mile [mi] |
|---|---|
| 0.01 km | 0.006214 mi |
| 0.1 km | 0.062137 mi |
| 1 km | 0.621371 mi |
| 2 km | 1.242742 mi |
| 3 km | 1.864114 mi |
| 5 km | 3.106856 mi |
| 10 km | 6.213712 mi |
| 20 km | 12.427424 mi |
| 50 km | 31.06856 mi |
| 100 km | 62.137119 mi |
| 1000 km | 621.371192 mi |