Convert kilometers to nautical miles
1 km = 0.539956803456 nmi — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.539 956 803 456nmi
As a fraction: 250/463
1 km = 0.539956803456 nmi
How to convert kilometers to nautical miles
Multiply the number of kilometers by 0.539956803456 to get nautical miles.
Nautical mile: Exactly 1852 m by international agreement — roughly one minute of latitude.
Kilometer to Nautical mile conversion table
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 1 km | 0.539 956 8 |
| 2 km | 1.079 913 6 |
| 3 km | 1.619 870 4 |
| 5 km | 2.699 784 |
| 10 km | 5.399 568 |
| 20 km | 10.799 136 |
| 25 km | 13.498 92 |
| 50 km | 26.997 84 |
| 100 km | 53.995 68 |
| 250 km | 134.9892 |
| 500 km | 269.9784 |
| 1000 km | 539.9568 |
Nautical mile to Kilometer conversion table
| Nautical miles (nmi) | Kilometers (km) |
|---|---|
| 1 nmi | 1.852 |
| 2 nmi | 3.704 |
| 3 nmi | 5.556 |
| 5 nmi | 9.26 |
| 10 nmi | 18.52 |
| 20 nmi | 37.04 |
| 25 nmi | 46.3 |
| 50 nmi | 92.6 |
| 100 nmi | 185.2 |
| 250 nmi | 463 |
| 500 nmi | 926 |
| 1000 nmi | 1852 |
Frequently asked
How many nautical miles are in a kilometer?
One kilometer equals 0.5399568035 nautical miles (km → nmi). That figure is exact, not rounded.
How do you convert kilometers to nautical miles?
Multiply the number of kilometers by 0.539956803456 to get nautical miles.
What is 1 nmi in kilometers?
One nautical mile is 1.852 kilometers.
What is 10 km in nmi?
10 km = 5.399 568 nmi.
What exactly is a nautical mile?
Exactly 1852 m by international agreement — roughly one minute of latitude.