Convert Square Kilometers to Square Nautical Miles
Convert Square Kilometers (km²) to Square Nautical Miles (nmi²) instantly and accurately.
Conversion Formula
nmi² = km² × 0.2915533496
About Square Kilometers
A square kilometer (km²) is a metric unit of area equal to a square with sides of one kilometer (1,000 m × 1,000 m). It is used for measuring large land areas such as cities, forests, lakes, and countries. Manhattan (New York) is about 59 km², and Monaco (the second smallest country) is just over 2 km². This unit is essential in geography, urban planning, forestry, and environmental impact studies.
About Square Nautical Miles
A square nautical mile (nmi²) equals the area of a square with sides of one nautical mile (1,852 m), giving approximately 3,429,904 m² - about 343 hectares. This unit is used in maritime and aviation contexts to describe patrol zones, territorial extents, and maritime boundaries. Exclusive Economic Zones (EEZs) and military operating areas are often quoted in square nautical miles. One square nautical mile is approximately 1.32 square statute miles.
Quick Reference Table
| Square Kilometers (km²) | Square Nautical Miles (nmi²) |
|---|---|
| 1 km² | 0.291553 nmi² |
| 2 km² | 0.583107 nmi² |
| 5 km² | 1.45777 nmi² |
| 10 km² | 2.91553 nmi² |
| 25 km² | 7.28883 nmi² |
| 50 km² | 14.5777 nmi² |
| 100 km² | 29.1553 nmi² |