Units of measurement
From value
To value
Calculations
Square kilometer (km²)
Square nautical mile (nmi²)
0
0123456789
Information
Square kilometer (km²)
A square kilometer (km²) is used for measuring large areas, such as cities, forests, and countries. One km² equals 1,000,000 m².
Square nautical mile (nmi²)
A square nautical mile (nmi²) is a unit of area used in maritime navigation, equal to 3.43 km².