How to convert nautical miles to kilometers
km = nmi × 1.852Multiply the value in nautical miles by 1.852. To go the other way, multiply by 0.5399568035 (or divide by 1.852).
A nautical mile is larger than a kilometer: one nautical mile contains 1.852 kilometers.
Worked examples
- 1 nautical mile1 nmi × 1.852 = 1.852 km
- 5 nautical miles5 nmi × 1.852 = 9.26 km
- 10 nautical miles10 nmi × 1.852 = 18.52 km
- 20 nautical miles20 nmi × 1.852 = 37.04 km
- 100 nautical miles100 nmi × 1.852 = 185.2 km
Nautical miles to kilometers conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Nautical miles (nmi) | Kilometers (km) |
|---|---|
| 0.1 nmi | 0.1852 km |
| 0.25 nmi | 0.463 km |
| 0.5 nmi | 0.926 km |
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 3 nmi | 5.556 km |
| 4 nmi | 7.408 km |
| 5 nmi | 9.26 km |
| 6 nmi | 11.112 km |
| 7 nmi | 12.964 km |
| 8 nmi | 14.816 km |
| 9 nmi | 16.668 km |
| 10 nmi | 18.52 km |
| Nautical miles (nmi) | Kilometers (km) |
|---|---|
| 12 nmi | 22.224 km |
| 15 nmi | 27.78 km |
| 20 nmi | 37.04 km |
| 25 nmi | 46.3 km |
| 30 nmi | 55.56 km |
| 40 nmi | 74.08 km |
| 50 nmi | 92.6 km |
| 75 nmi | 138.9 km |
| 100 nmi | 185.2 km |
| 250 nmi | 463 km |
| 500 nmi | 926 km |
| 1,000 nmi | 1,852 km |
About the units
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).
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).
Frequently asked questions
How many kilometers are in one nautical mile?
There are 1.852 kilometers in one nautical mile, and this value is exact by definition.
How do I convert nautical miles to kilometers?
Multiply the number of nautical miles by 1.852. For example, 10 nmi × 1.852 = 18.52 km.
How many nautical miles are in one kilometer?
One kilometer equals 0.5399568035 nautical miles. That is the reverse factor, 1 ÷ 1.852.
What is 10 nautical miles in kilometers?
10 nmi = 18.52 km.
Is this nmi to km 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.