Convert Nautical Miles to Kilometers
Nautical Miles to Kilometers conversion table
| Nautical Miles (nmi) | Kilometers (km) |
|---|---|
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 5 nmi | 9.26 km |
| 10 nmi | 18.52 km |
| 25 nmi | 46.3 km |
| 50 nmi | 92.6 km |
| 100 nmi | 185.2 km |
| 200 nmi | 370.4 km |
| 500 nmi | 926 km |
| 1000 nmi | 1852 km |
How to convert nautical miles to kilometers
A nautical mile is a specialized unit equal to one minute of latitude, defined as exactly 1,852 meters or 1.852 kilometers. It differs from the statute mile (1.609 km) used on land. Nautical miles are standard in maritime navigation, aviation, and weather mapping.
Multiply nautical miles by 1.852 to get kilometers. Formula: km = nmi × 1.852. A ship traveling 20 nautical miles covers 20 × 1.852 = 37.04 km. Flight distances on aeronautical charts are always in nautical miles.
Pilots, sailors, and air traffic controllers rely on this conversion when communicating with ground services that use kilometers. Wind speed in knots (nautical miles per hour) also ties to this unit system.
Remember: 1 nmi = 1.852 km, while 1 statute mi = 1.609 km. A nautical mile is about 15% longer. Speed in knots × 1.852 gives km/h.
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Frequently asked questions
Exactly 1.852 kilometers, based on the international definition of 1,852 meters.
Nautical miles relate directly to latitude coordinates — one minute of arc along a meridian equals one nautical mile, simplifying chart navigation.
A nautical mile (1.852 km) is about 15% longer than a statute mile (1.609 km).