Direct answer
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.