UnitConNautical Miles to Kilometers Converter
Convert nautical miles to kilometers for maritime navigation, aviation, and international weather reporting. The nautical mile is the standard unit for sea and air travel worldwide.
Formula
Multiply nautical miles by 1.852 to get kilometers. To reverse, divide kilometers by 1.852 to get nautical miles.
Quick reference
| Nautical Mile (nmi) | Kilometer (km) |
|---|---|
| 1 | 1.852 |
| 5 | 9.26 |
| 10 | 18.52 |
| 20 | 37.04 |
| 50 | 92.6 |
| 100 | 185.2 |
| 200 | 370.4 |
| 500 | 926 |
| 1000 | 1,852 |
| 3000 | 5,556 |
About these units
Nautical Mile
The nautical mile was originally defined as one minute of arc of latitude along a meridian, making it directly useful for celestial navigation. It was standardized internationally at exactly 1852 meters in 1929 at the International Extraordinary Hydrographic Conference in Monaco.
Kilometer
The kilometer is the metric standard for overland distances, derived from the meter. Its straightforward decimal relationship to SI units makes it the preferred unit for terrestrial navigation and mapping outside of maritime and aviation contexts.
Frequently asked questions
One nautical mile corresponds to one minute of latitude on the Earth's surface, making it directly tied to geographic coordinates and celestial navigation. This makes chart reading and position calculation much simpler at sea.
One nautical mile equals approximately 1.15 statute miles (1.852 km vs 1.609 km).
One knot equals one nautical mile per hour, or approximately 1.852 km/h.