Length Converter
Metric and imperial distances.
Conversion
Nautical Miles to Kilometers Converter
1 nautical mile = 1.852 km. Enter any value to convert nautical miles (nmi) to kilometers (km), or use the table below for common values.
Formula
km = nmi × 1.852
Example: 10 nmi = 18.52 km. To convert the other way, use nmi = km × 0.5399568035.
Quick mental estimate: multiply by about 1.9.
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 |
| 4 nmi | 7.408 km |
| 5 nmi | 9.26 km |
| 6 nmi | 11.112 km |
| 7 nmi | 12.964 km |
| 8 nmi | 14.816 km |
| 9 nmi | 16.668 km |
| 10 nmi | 18.52 km |
| 15 nmi | 27.78 km |
| 20 nmi | 37.04 km |
| 25 nmi | 46.3 km |
| 30 nmi | 55.56 km |
| 40 nmi | 74.08 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 |
About nautical miles and kilometers
The nautical mile is exactly 1,852 meters, originally one minute of latitude. It is used in aviation and at sea, together with the knot.
The kilometer is 1,000 meters. It is the standard unit for road distances and speed limits in most of the world.
Other Length conversions
Kilometers → Nautical MilesReverse conversionMillimeters → Kilometersmm → kmCentimeters → Kilometerscm → kmMeters → Kilometersm → kmInches → Kilometersin → kmFeet → Kilometersft → kmYards → Kilometersyd → kmMiles → Kilometersmi → kmNautical Miles → Millimetersnmi → mmNautical Miles → Centimetersnmi → cmNautical Miles → Metersnmi → mNautical Miles → Inchesnmi → inNautical Miles → Feetnmi → ftNautical Miles → Yardsnmi → ydNautical Miles → Milesnmi → mi
Frequently asked questions
How do I convert nautical miles to kilometers?
Use the formula km = nmi × 1.852. For example, 10 nmi = 18.52 km.
What is 1 nautical mile in kilometers?
1 nmi = 1.852 km.
How do I convert kilometers back to nautical miles?
Use nmi = km × 0.5399568035. 1 km = 0.5399568035 nmi.