Convert Nautical Mile to Kilometer
Convert Nautical Mile to Kilometer instantly. 1 nmi = 1.852 km. Formula, worked examples and a quick reference table.
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One nautical mile equals 1.852 kilometer. To convert any number of nautical miles to kilometers, multiply by 1.852.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Nautical Mile to Kilometer formula
To go the other way, use nautical mile = kilometer ÷ 1.852.
About these units
A nautical mile is one minute of latitude, which is why it is the natural unit at sea and in the air. It was fixed at exactly 1,852 metres in 1929.
Nautical Mile to Kilometer conversion table
| Nautical Mile | Kilometer |
|---|---|
| 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 |
| 250 nmi | 463 km |
| 500 nmi | 926 km |
| 1,000 nmi | 1,852 km |
Frequently asked questions
How many kilometers are in a nautical mile? +
There are 1.852 kilometers in one nautical mile.
What is 10 nmi in km? +
10 nmi equals 18.52 km. Multiply 10 by 1.852.
How do I convert kilometer back to nautical mile? +
Use nautical mile = kilometer ÷ 1.852. The converter above handles both directions, or see our dedicated Kilometer to Nautical Mile page.