Convert Nautical miles to kilometers
1 nautical mile = 1.852 kilometers · km = nmi × 1.852
When you need this conversion
This conversion goes from nautical miles, the navigation unit used at sea and in aviation, to kilometers, the metric unit for road distances and travel. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Nautical miles to kilometers conversion table
| Nautical miles (nmi) | Kilometers (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 |
| 15 nmi | 27.78 km |
| 20 nmi | 37.04 km |
| 25 nmi | 46.3 km |
| 50 nmi | 92.6 km |
| 75 nmi | 138.9 km |
| 100 nmi | 185.2 km |
| 250 nmi | 463 km |
| 500 nmi | 926 km |
| 1,000 nmi | 1,852 km |
The formula
km = nmi × 1.852Because both units measure length, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Kilometers to nautical miles →Related length conversions
- Meters to kilometers
- Millimeters to micrometers
- Centimeters to inches
- Centimeters to feet
- Kilometers to meters
- Inches to centimeters
- Feet to centimeters
- Feet to yards
- Yards to feet
- Micrometers to millimeters
- Millimeters to kilometers
- Centimeters to kilometers
Frequently asked questions
- How many kilometers are in a nautical mile?
- There are 1.852 kilometers in 1 nautical mile. The formula is km = nmi × 1.852.
- How do you convert nautical miles to kilometers?
- Use the formula km = nmi × 1.852. For example, 10 nautical miles equals 18.52 kilometers.
- Is the nautical miles to kilometers conversion exact?
- Yes. Nautical miles and kilometers are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
- What is nmi short for?
- nmi is the standard symbol for nautical mile. km is the symbol for kilometer.