How to convert kilometers to nautical miles
nmi = km × 0.5399568035Because one nautical mile equals 1.852 kilometers, you can also divide: nmi = km ÷ 1.852.
A kilometer is smaller than a nautical mile: it takes 1.852 kilometers to make one nautical mile.
Worked examples
- 1 kilometer1 km × 0.5399568035 = 0.5399568035 nmi
- 5 kilometers5 km × 0.5399568035 = 2.699784017 nmi
- 10 kilometers10 km × 0.5399568035 = 5.399568035 nmi
- 20 kilometers20 km × 0.5399568035 = 10.79913607 nmi
- 100 kilometers100 km × 0.5399568035 = 53.99568035 nmi
Kilometers to nautical miles conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 0.1 km | 0.05399568 nmi |
| 0.25 km | 0.1349892 nmi |
| 0.5 km | 0.2699784 nmi |
| 1 km | 0.5399568 nmi |
| 2 km | 1.0799136 nmi |
| 3 km | 1.6198704 nmi |
| 4 km | 2.1598272 nmi |
| 5 km | 2.699784 nmi |
| 6 km | 3.2397408 nmi |
| 7 km | 3.7796976 nmi |
| 8 km | 4.3196544 nmi |
| 9 km | 4.8596112 nmi |
| 10 km | 5.399568 nmi |
| Kilometers (km) | Nautical miles (nmi) |
|---|---|
| 12 km | 6.4794816 nmi |
| 15 km | 8.0993521 nmi |
| 20 km | 10.799136 nmi |
| 25 km | 13.49892 nmi |
| 30 km | 16.198704 nmi |
| 40 km | 21.598272 nmi |
| 50 km | 26.99784 nmi |
| 75 km | 40.49676 nmi |
| 100 km | 53.99568 nmi |
| 250 km | 134.9892 nmi |
| 500 km | 269.9784 nmi |
| 1,000 km | 539.9568 nmi |
About the units
Kilometer (km)
One thousand metres. Kilometres measure road distances and running races in most countries; a 10K race is 10 km, about 6.2 miles. One kilometer equals 1,000 meters (m).
Nautical mile (nmi)
Exactly 1,852 m, originally one minute of latitude. Nautical miles are used in aviation and at sea, together with the knot (one nautical mile per hour).
Frequently asked questions
How many nautical miles are in one kilometer?
There are 0.5399568035 nautical miles in one kilometer, and this value is exact by definition.
How do I convert kilometers to nautical miles?
Multiply the number of kilometers by 0.5399568035. For example, 10 km × 0.5399568035 = 5.399568035 nmi.
How many kilometers are in one nautical mile?
One nautical mile equals 1.852 kilometers. That is the reverse factor, 1 ÷ 0.5399568035.
What is 10 kilometers in nautical miles?
10 km = 5.399568035 nmi.
Is this km to nmi converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.