Kilometers to Nautical Miles Converter
How to convert kilometers to nautical miles
nautical miles = kilometers ÷ 1.852
To convert kilometers to nautical miles, divide the number of kilometers by 1.852.
1 km = 0.539956803 nmi
Examples
- A marathon: 42.195 km ÷ 1.852 = 22.7834773 nmi
- A 5K race: 5 km ÷ 1.852 = 2.69978402 nmi
Good to know
One nautical mile is exactly 1.852 kilometers.
This is the international nautical mile of 1,852 m, which is about 15% longer than the statute mile of 1,609.344 m. The obsolete UK Admiralty nautical mile was 6,080 ft (1,853.184 m).
Kilometers to nautical miles conversion table
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 1 km | 0.539956803 nmi |
| 2 km | 1.07991361 nmi |
| 3 km | 1.61987041 nmi |
| 4 km | 2.15982721 nmi |
| 5 km | 2.69978402 nmi |
| 10 km | 5.39956803 nmi |
| 15 km | 8.09935205 nmi |
| 20 km | 10.7991361 nmi |
| 21.0975 km | 11.3917387 nmi |
| 25 km | 13.4989201 nmi |
| 30 km | 16.1987041 nmi |
| 40 km | 21.5982721 nmi |
| 42.195 km | 22.7834773 nmi |
| 50 km | 26.9978402 nmi |
| 100 km | 53.9956803 nmi |
| 200 km | 107.991361 nmi |
| 500 km | 269.978402 nmi |
| 1,000 km | 539.956803 nmi |
Unit definitions
- Kilometer (km)
- A kilometer is 1,000 meters. It is the standard unit for road distances and speed limits in most of the world.
- Nautical mile (nmi)
- The international nautical mile is exactly 1,852 meters, roughly one minute of arc of latitude. It is the standard distance unit in marine and air navigation.