Nautical Miles to Kilometres Converter
1 nautical mile = 1.852 kilometres.
Enter a value
Result
1 nautical mile =
1.852 km
1 nmi × 1.852 = 1.852 km
1 inch = 2.54 cm exactly · 1 mile = 1.609344 km exactly
The working
- 1. Convert 1 nmi to metres: 1 × 1,852 = 1,852.
- 2. Convert to km: 1,852 ÷ 1,000 = 1.852.
1 nmi in every unit
Handy reference lengths
- A4 sheet (long side)
- 29.7 cm
- Standard door height
- 2.03 m
- Football pitch
- 105 m
- Marathon
- 42.195 km
Conversion table
Nautical miles to Kilometres
| Nautical miles | Kilometres |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 3 | 5.556 |
| 4 | 7.408 |
| 5 | 9.26 |
| 6 | 11.112 |
| 7 | 12.964 |
| 8 | 14.816 |
| 9 | 16.668 |
| 10 | 18.52 |
| 15 | 27.78 |
| 20 | 37.04 |
| 25 | 46.3 |
| 50 | 92.6 |
| 100 | 185.2 |
Kilometres to Nautical miles
| Kilometres | Nautical miles |
|---|---|
| 1 | 0.53996 |
| 2 | 1.0799 |
| 3 | 1.6199 |
| 4 | 2.1598 |
| 5 | 2.6998 |
| 6 | 3.2397 |
| 7 | 3.7797 |
| 8 | 4.3197 |
| 9 | 4.8596 |
| 10 | 5.3996 |
| 15 | 8.0994 |
| 20 | 10.799 |
| 25 | 13.499 |
| 50 | 26.998 |
| 100 | 53.996 |
Formula and worked example
kilometres = nautical miles × 1.852 (1 nautical mile is exactly 1,852 m).
Convert 10 nautical miles to kilometres: 10 × 1.852 = 18.52 km.
When you need this
Sailors and pilots navigate in nautical miles because one nautical mile matches one minute of latitude. Converting to kilometres helps when comparing sea routes with road distances.
Questions people ask
How many kilometres are in a nautical mile?
One nautical mile is 1.852 kilometres. 1 nautical mile is exactly 1,852 m.
How do I convert nautical miles to kilometres?
Multiply the number of nautical miles by 1.852.
What is 10 nmi in km?
10 nautical miles is 18.52 kilometres.
How do I convert kilometres back to nautical miles?
Multiply by 0.5399568: one kilometre is 0.5399568 nautical miles.
Related conversions
How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
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