Kilometre to Nautical Mile
Free instant kilometre to nautical mile converter. 1 km = 0.539957 nmi.
Common Kilometre to Nautical Mile values
| Kilometre (km) | Nautical Mile (nmi) |
|---|---|
| 1 | 0.539957 |
| 5 | 2.69978 |
| 10 | 5.39957 |
| 25 | 13.4989 |
| 50 | 26.9978 |
| 100 | 53.9957 |
| 500 | 269.978 |
| 1000 | 539.957 |
How does Kilometre to Nautical Mile conversion work?
Type a value in the Kilometre (km) field and the equivalent in Nautical Mile (nmi) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Kilometre. A metric unit equal to 1,000 metres. About 0.62 miles. A typical brisk-walk pace covers a kilometre in 10–12 minutes.
Nautical Mile. Used in marine and air navigation. Defined as exactly 1,852 metres — about 1.151 statute miles.
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Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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