Kilometers to miles (km to mi)
Convert kilometers to miles. For length, 1 km equals 0.6213711922 mi.
Converter
km to mi conversion table
| Kilometers | Miles |
|---|---|
| 1 km | 0.62137119 mi |
| 2 km | 1.2427424 mi |
| 5 km | 3.106856 mi |
| 10 km | 6.2137119 mi |
| 25 km | 15.53428 mi |
| 50 km | 31.06856 mi |
| 100 km | 62.137119 mi |
| 1000 km | 621.37119 mi |
Formula
mi = km × 0.6213711922
Worked example
25 km × 0.6213711922 = 15.53427981 mi
Popular conversion examples
Choose an example to open this converter with the value filled in. These are useful examples, not a claim about search rankings.
- 1 km to mi = 0.621371 mi
- 5 km to mi = 3.10686 mi
- 100 km to mi = 62.1371 mi
- 3 km to mi = 1.86411 mi
- 1 mi to km = 1.60934 km
- 5 mi to km = 8.04672 km
About kilometers and miles
Kilometer (km)
A kilometer is 1,000 meters. It is the standard unit for road distances and mapping in most of the world.
Mile (mi)
The international (statute) mile is exactly 1,609.344 meters, which is 5,280 feet. It is used for road distances and speed limits in the US and UK.
Both are units of length; the base unit used internally is m.
Notes
- The inch, foot, yard and mile are the international units, defined exactly in meters (1 in = 0.0254 m). US survey units are not included.
- The nautical mile is the international nautical mile, exactly 1,852 m.
- Negative values are accepted because length can represent a signed displacement.
km to mi FAQs
How do I convert kilometers to miles?
Multiply the number of kilometers by 0.6213711922 to get miles. For example, 25 km × 0.6213711922 = 15.5343 mi.
How many miles are in one kilometer?
1 km = 0.6213711922 mi and 1 mi = 1.609344 km. To go the other way, use the miles to kilometers converter.
How many miles are in 100 kilometers?
100 km = 62.1371 mi, rounded to 6 significant digits. Change the value in the converter above for any other amount.
How many miles are in 20 kilometers?
20 km = 12.4274 mi, rounded to 6 significant digits.
What is the formula for kilometers to miles?
mi = km × 0.6213711922, where km is the number of kilometers and mi is the result in miles. The reverse is km = mi × 1.609344.
Is the km to mi conversion exact?
The ratio is exact by definition, but its decimal form does not end (0.621371192237… to 12 significant digits). The converter keeps full precision internally and rounds only the displayed answer, which you can set from 4 to 12 significant digits.
What is the difference between kilometers and miles?
A kilometer is 1,000 meters. It is the standard unit for road distances and mapping in most of the world. The international (statute) mile is exactly 1,609.344 meters, which is 5,280 feet. It is used for road distances and speed limits in the US and UK.
Related converters
Reverse: Miles to kilometers.
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Guide
Read: Meter vs Yard and Mile vs Kilometer.