Nautical Miles to Kilometres
Convert nautical miles (nmi) to kilometres (km) instantly — with formula and reference table.
Quick answer: 1 nmi = 1.852 km. To convert nautical miles to kilometres, multiply by nmi × 1.852.
Converting nautical miles to kilometres
This converter changes a value in nautical miles (nmi) into kilometres (km). One nautical mile equals 1.852 km. One nautical mile equals exactly 1.852 kilometres. It is based on one minute of latitude and is used in sea and air navigation. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
km = nmi × 1.852
Example
Convert 10 nmi to km: 10 × 1.852 = 18.52 km.
Nautical Miles to Kilometres conversion table
| Nautical Miles (nmi) | Kilometres (km) |
|---|---|
| 1 nmi | 1.852 km |
| 2 nmi | 3.704 km |
| 3 nmi | 5.556 km |
| 5 nmi | 9.26 km |
| 10 nmi | 18.52 km |
| 20 nmi | 37.04 km |
| 25 nmi | 46.3 km |
| 50 nmi | 92.6 km |
| 100 nmi | 185.2 km |
How to use this converter
- Enter a value in the nautical miles (nmi) field.
- Read the converted value in kilometres (km) below.
- Type into the km field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many kilometres are in a nautical mile?
1 nautical mile equals exactly 1.852 kilometres.
How do I convert 100 nautical miles to km?
100 times 1.852 = 185.2 km.
Why is a nautical mile different from a regular mile?
A nautical mile (1.852 km) is tied to the Earth's geometry - one minute of latitude - while a statute mile is 1.609 km.