Nautical Miles to Kilometers — Marine and Aviation Distance
- 1 nautical mile = 1.852 kilometers = 1.151 regular miles. Nautical miles are used in aviation and marine navigation worldwide. Here is how they convert.
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1 nautical mile = 1.852 kilometers = 1.151 miles. To convert nautical miles to km, multiply by 1.852. To go the other way, divide km by 1.852.
Nautical miles are the standard for aviation and maritime navigation globally. If you see a distance in NM on a flight tracker or nautical chart, this is how it converts to more familiar units.
Nautical Miles to KM Conversion Table
| Nautical Miles | Kilometers | Regular Miles |
|---|---|---|
| 1 NM | 1.852 km | 1.151 mi |
| 5 NM | 9.26 km | 5.754 mi |
| 10 NM | 18.52 km | 11.508 mi |
| 50 NM | 92.6 km | 57.54 mi |
| 100 NM | 185.2 km | 115.08 mi |
| 500 NM | 926 km | 575.4 mi |
| 1,000 NM | 1,852 km | 1,150.8 mi |
What Is a Nautical Mile?
A nautical mile is defined as exactly 1,852 meters. It originated as one minute of arc along a meridian of longitude — which makes it inherently tied to Earth's geometry. This relationship makes nautical miles natural for navigation: each degree of latitude equals 60 nautical miles.
A regular (statute) mile = 1,609.344 meters. A nautical mile is about 15% longer than a regular mile.
Sell Custom Apparel — We Handle Printing & Free ShippingKnots — Nautical Miles Per Hour
Speed in maritime and aviation contexts is measured in knots. One knot = 1 nautical mile per hour = 1.852 km/h = 1.151 mph.
If a ship is traveling at 20 knots, it covers 20 nautical miles (37.04 km) per hour. A commercial aircraft cruising at 500 knots covers 500 NM (926 km) per hour.
The unit converter above includes knots in the Speed category alongside km/h and mph — enter any speed in knots and convert instantly.
Converting Nautical Miles Using the Unit Converter
The unit converter handles regular miles and kilometers in the Length category — useful for most distance calculations. Nautical miles are not a separate option in the tool, but the math is straightforward: multiply NM by 1.852 to get km, then use the length converter for any further conversions.
Example: 50 NM × 1.852 = 92.6 km. Enter 92.6 km in the Length converter to get meters, feet, or miles.
Convert Distance Units Free
Miles, kilometers, knots and more — all in one free unit converter.
Open Unit Converter FreeFrequently Asked Questions
How many km is a nautical mile?
1 nautical mile = 1.852 kilometers exactly. This is the international standard definition.
What is the difference between a nautical mile and a regular mile?
A nautical mile is 1,852 meters. A regular (statute) mile is 1,609.344 meters. A nautical mile is about 14.8% longer.
Why do ships and planes use nautical miles?
Nautical miles align with Earth's geometry — 1 NM equals 1 minute of latitude arc. This makes navigation calculations simpler on nautical charts and aviation maps.
How fast is 1 knot in km/h?
1 knot = 1.852 km/h = 1.151 mph. Knots are nautical miles per hour.
