Nautical Miles to Kilometers Converter
Convert nautical miles to kilometers instantly. Type a value, change either unit, or press swap to go the other way. 1 nautical mile = 1.852 kilometers.
1 nautical mile = 1.852 kilometers
How to convert nautical miles to kilometers
kilometers = nautical miles × 1.852
To convert nautical miles to kilometers, multiply the value by 1.852. To go back from kilometers to nautical miles, divide by the same number (or multiply by 0.5399568035).
Worked examples
- 10 nmi: 10 × 1.852 = 18.52 km
- 25 nmi: 25 × 1.852 = 46.3 km
- 50 nmi: 50 × 1.852 = 92.6 km
Multiply nautical miles by 1.85, or by 2 and subtract 7 percent. 100 nautical miles is 185.2 km.
Nautical Miles to Kilometers conversion table
Nautical Miles to Kilometers
| nmi | km |
|---|---|
| 1 | 1.852 |
| 5 | 9.26 |
| 10 | 18.52 |
| 25 | 46.3 |
| 50 | 92.6 |
| 100 | 185.2 |
| 200 | 370.4 |
| 500 | 926 |
| 1,000 | 1,852 |
| 3,000 | 5,556 |
Kilometers to Nautical Miles
| km | nmi |
|---|---|
| 1 | 0.5399568 |
| 5 | 2.699784 |
| 10 | 5.399568 |
| 25 | 13.49892 |
| 50 | 26.99784 |
| 100 | 53.99568 |
| 200 | 107.99136 |
| 500 | 269.9784 |
| 1,000 | 539.9568 |
| 3,000 | 1,619.8704 |
Distance equivalents
See how one nautical mile and one kilometer compare with every other distance unit on the site.
1 nautical mile equals
| Unit | Value |
|---|---|
| millimeters (mm) | 1,852,000 |
| centimeters (cm) | 185,200 |
| meters (m) | 1,852 |
| kilometers (km) | 1.852 |
| inches (in) | 72,913.39 |
| feet (ft) | 6,076.115 |
| yards (yd) | 2,025.372 |
| miles (mi) | 1.150779 |
1 kilometer equals
| Unit | Value |
|---|---|
| millimeters (mm) | 1,000,000 |
| centimeters (cm) | 100,000 |
| meters (m) | 1,000 |
| inches (in) | 39,370.08 |
| feet (ft) | 3,280.84 |
| yards (yd) | 1,093.613 |
| miles (mi) | 0.6213712 |
| nautical miles (nmi) | 0.5399568 |
When you need to convert nautical miles to kilometers
Pilots, sailors and weather services measure distance in nautical miles, but maps for the public and road-based sources use kilometers. The conversion is needed for flight planning, shipping routes and understanding marine forecasts.
About the units
Nautical mile (nmi)
A nautical mile is exactly 1,852 meters and is based on one minute of latitude. It is the standard distance unit at sea and in aviation.
Kilometer (km)
A kilometer is 1,000 meters and is used for road distances in nearly every country except the US and, for road signs, the UK. It is about 0.62 miles.
Frequently asked questions
How do I convert nautical miles to kilometers?
Multiply the number of nautical miles by 1.852. For example, 10 nautical miles × 1.852 = 18.52 kilometers.
How many kilometers are in one nautical mile?
There are 1.852 kilometers in one nautical mile.
How many nautical miles are in one kilometer?
There are 0.5399568035 nautical miles in one kilometer.
Why is a nautical mile 1,852 meters?
A nautical mile was originally one minute of latitude along a meridian, about 1,852 meters. The value was fixed internationally in 1929 so that ships and aircraft of all countries use the same distance.
Can I convert other distance units with this tool?
Yes. Use the From and To drop-downs in the converter to choose any distance unit, or press the swap button to reverse the conversion. All calculations use internationally defined conversion factors.