Convert kilometres to nautical miles
Enter a value in kilometres (km) to get nautical miles (nmi). One kilometre is 0.539957 nautical miles; one nautical mile is 1.852 kilometres.
How to use the Kilometre to nautical mile
- Type the number of kilometres.
- Click Convert.
- Read the result in nautical miles, plus the same value in every other length unit.
km to nmi formula
nautical miles = kilometres × 0.539957. To go the other way, kilometres = nautical miles × 1.852 (see nautical miles to kilometres).
Worked example
12 km × 0.539957 = 6.4795 nmi.
Kilometres to nautical miles conversion table
| Kilometres | Nautical miles |
|---|---|
| 0.1 km | 0.053996 nmi |
| 0.5 km | 0.269978 nmi |
| 1 km | 0.539957 nmi |
| 2 km | 1.0799 nmi |
| 3 km | 1.6199 nmi |
| 5 km | 2.6998 nmi |
| 10 km | 5.3996 nmi |
| 20 km | 10.7991 nmi |
| 25 km | 13.4989 nmi |
| 50 km | 26.9978 nmi |
| 100 km | 53.9957 nmi |
| 250 km | 134.9892 nmi |
| 500 km | 269.9784 nmi |
| 1,000 km | 539.9568 nmi |
About the kilometre
One thousand metres; the unit for road distances and running events in most of the world.
About the nautical mile
Exactly 1,852 m, about one minute of latitude. Used at sea and in aviation.
Related conversions
nautical miles to kilometres · kilometres to metres · kilometres to miles · any unit.
Frequently asked questions
How many nautical miles in a kilometre?
0.539957 nautical miles.
How many kilometres in a nautical mile?
1.852 kilometres.
Is the factor exact?
The factor 0.539957 is derived from the units' exact definitions; only the display is rounded.
Privacy
This tool runs entirely inside your browser using WebAssembly and the Canvas/File APIs. Your files are never uploaded to ToolFlint or any third party; you can verify this in your browser's network tab or by switching to airplane mode after the page loads. Read how we process files.
Last updated 2026-09-23.