Nautical Miles to km Converter
One nautical mile is exactly 1.852 kilometers. Type a distance in nautical miles and get km and statute miles, or swap to turn km into nautical miles.
Convert nautical miles to kilometers
100 nautical miles = 185.2 kilometers
1 nautical miles = 1.852 kilometers
- 115.0779 miles
How to Convert Nautical Miles to km
Multiply by 1.852
Enter the distance
Type the distance in nautical miles, from a chart, a passage plan or a route.
Read the km
The converter multiplies by 1.852 and shows statute miles next to it.
Swap if needed
Use the swap button to turn kilometers into nautical miles, which divides by 1.852.
One Nautical Mile Is 1.852 km
Defined exactly in 1929
Exact factor
The international nautical mile is defined as exactly 1,852 meters, so the conversion has no rounding.
Tied to the globe
A nautical mile is about one minute of latitude, so a chart's side scale doubles as a distance ruler.
Both directions
Swap the units to turn a distance in km into nautical miles for a passage plan.
Free
No account and no limit. The conversion runs in your browser.
Who Converts Nautical Miles to km
Who it is for and what they use it for
Sailors and navigators
Turn a passage length in nautical miles into the kilometers your crew or family will understand.
Maritime and aviation students
Check unit conversions for navigation exams, where both ships and aircraft use nautical miles.
Travelers
See how far a ferry or cruise leg really is: 200 nautical miles is 370 km.
Frequently Asked
Questions
Everything you need to know about the Nautical Miles to km Converter.
Exactly 1.852 km, or 1,852 meters, by the international definition adopted in 1929.
Divide kilometers by 1.852, or multiply by about 0.54. 100 km is 54 nautical miles.
A nautical mile comes from the Earth's shape, not from the meter. It is about one minute of latitude, one sixtieth of a degree, which works out at 1,852 meters.
12 nautical miles is 22.2 km. That is the width of a country's territorial sea under the UN Convention on the Law of the Sea.
The usual abbreviations are nm, NM and M. The international standard symbol is M, but nm is the most common in everyday use.
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