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How Many Kilometers in a Nautical Mile? 1 nmi = 1.852 km

1 international nautical mile equals exactly 1.852 kilometers (1852 m). Aviation and marine distance answer with converter links.

Question

How many kilometers are in a nautical mile?

1 international nautical mile equals exactly 1.852 kilometers (1852 meters).

1 nmi

1.852 km (exact)

1 nmi

1852 m (exact)

1 statute mile

≈ 1.60934 km

Explanation

The international nautical mile is defined as exactly 1852 meters, so the km factor is exact: 1.852.

Do not confuse it with the statute (land) mile used on roads: 1 statute mile ≈ 1.60934 km.

Aviation and marine charts use nautical miles because they align with minutes of latitude.

Important caveat

Older regional definitions of the nautical mile exist in history books; modern charts use the international 1852 m definition.

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