Square kilometer (km²)Square nautical mile (nmi²)00GeneralArea

Units of measurement

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Square kilometer (km²)
Square nautical mile (nmi²)
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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.

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