Km to miles converter
Convert kilometers to miles instantly. 1 km equals 0.6214 miles; 1 mile equals exactly 1.609344 km.
Converting km to miles
Kilometers and miles measure the same thing — distance — but most of the world uses kilometers while the US, UK (for road signs), and a few other countries use miles. Runners track race events in km internationally but often think in miles domestically. Road signs differ by country, and speed limits need conversion when driving abroad.
The exact ratio is 1 mile = 1.609344 kilometers, fixed by the international yard and pound agreement. To convert km to miles, divide by 1.609344. Every value this tool shows is calculated from that exact ratio — no rounding or approximation.
Running distances
Standard race distances and their mile equivalents:
| km | Miles | Event |
|---|---|---|
| 1 km | 0.621371 mi | Fun run |
| 5 km | 3.1069 mi | 5K |
| 10 km | 6.2137 mi | 10K |
| 15 km | 9.3206 mi | 15K |
| 21.0975 km | 13.1094 mi | Half marathon |
| 42.195 km | 26.2188 mi | Marathon |
| 50 km | 31.0686 mi | Ultramarathon |
| 100 km | 62.1371 mi | 100K ultra |
Speed limits
Common speed limits around the world and their mph equivalents:
| km/h | mph | Typical road type |
|---|---|---|
| 30 km/h | 18.6411 mph | Residential zone |
| 50 km/h | 31.0686 mph | Urban road |
| 80 km/h | 49.7097 mph | Rural road |
| 100 km/h | 62.1371 mph | Highway |
| 120 km/h | 74.5645 mph | Motorway |
| 130 km/h | 80.7783 mph | Autobahn (advisory) |
Frequently asked
Use the full length converter to convert between cm, meters, feet, inches, yards, miles, and more — all 14 units in one place.