How many kilometers are in 1 nautical mile?

One nautical mile equals exactly 1.852 kilometers. This was internationally standardized in 1929. The nautical mile is about 15% longer than a statute mile (1.609 km).

Why is a nautical mile different from a regular mile?

A nautical mile is based on the geometry of the Earth: it equals one minute of arc of latitude. A statute mile is a historical English unit of 5,280 feet. The nautical mile (1.852 km) is longer than the statute mile (1.609 km).

What is a knot in km/h?

One knot equals one nautical mile per hour, which is 1.852 km/h. So 30 knots = 55.56 km/h. The term comes from counting knots on a rope trailed behind a ship.

Nautical Miles to Kilometers (nmi to km) Converter

1 nmi = 1.852 km

1 Nautical Mile equals 1.852 Kilometers (1 nmi = 1.852 km). Convert Nautical Miles to Kilometers with formula, table, and examples.

One nautical mile equals exactly 1.852 kilometers. This conversion is essential for interpreting maritime and aviation distances in everyday metric terms. Sailors, pilots, and anyone reading shipping news or flight data needs this conversion regularly.

How to Convert Nautical Miles to Kilometers

km = nmi × 1.852

Multiply the value in Nautical Miles by 1.852

Take your value in Nautical Miles
Multiply by 1.852
Read the result in Kilometers

Common Nautical Miles to Kilometers Conversions

Nautical Miles (nmi)	Kilometers (km)	Status
0.1 nmi	0.1852 km
0.5 nmi	0.926 km
1 nmi	1.852 km
2 nmi	3.704 km
5 nmi	9.26 km
10 nmi	18.52 km
50 nmi	92.6 km
100 nmi	185.2 km
500 nmi	926 km
1,000 nmi	1,852 km
3,000 nmi	5,556 km
5,000 nmi	9,260 km
10,000 nmi	18,520 km
21,600 nmi	40,003.2 km

Good to Know About Nautical Miles to Kilometers Conversion

Aviation uses nautical miles worldwide, even in metric countries. When a pilot reports being '50 miles from the airport', they always mean nautical miles (92.6 km), not statute miles (80.5 km). This convention is universal.

Nautical Miles to Kilometers: What You Need to Know

A ship traveling 100 nautical miles has covered 185.2 km. Territorial waters extend 12 nautical miles (22.2 km) from a nation's coastline. Flight distances between airports are given in nautical miles but passengers think in kilometers. A speed of 20 knots means 20 nautical miles per hour, or 37.04 km/h.

What is a Nautical Mile? nmi

Exactly 1852 meters by international agreement. Based on one minute of arc of latitude at the Earth's surface. The standard unit for maritime and air navigation.

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Learn more about Nautical Mile →

What is a Kilometer? km

A metric unit of length equal to 1000 meters. The standard unit for measuring road distances and geographic distances in most countries.

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Learn more about Kilometer →

Going the other way? Use our Kilometers to Nautical Miles converter.

Nautical Miles to Kilometers FAQ

One nautical mile equals exactly 1.852 kilometers. This was internationally standardized in 1929. The nautical mile is about 15% longer than a statute mile (1.609 km).
A nautical mile is based on the geometry of the Earth: it equals one minute of arc of latitude. A statute mile is a historical English unit of 5,280 feet. The nautical mile (1.852 km) is longer than the statute mile (1.609 km).
One knot equals one nautical mile per hour, which is 1.852 km/h. So 30 knots = 55.56 km/h. The term comes from counting knots on a rope trailed behind a ship.

Non-Frequently Asked Questions About Nautical Miles to Kilometers

Questions nobody should ask - but someone did.

A nautical mile (1,852 m) is not inherently wet. It is simply defined as one arcminute of latitude on Earth's surface. It is used at sea and in the air. The regular mile (1,609 m) is used on land. Same concept, different medium, same dryness of definition.