Convert Square Miles to Square Nautical Miles
Convert Square Miles (mi²) to Square Nautical Miles (nmi²) instantly and accurately.
Conversion Formula
nmi² = mi² × 0.755119709
About Square Miles
A square mile (mi²) is an imperial unit of area equal to a square with sides of one mile (5,280 ft × 5,280 ft). It is used for measuring large land areas like counties, states, and countries in the United States. Los Angeles covers about 503 mi², Rhode Island (smallest US state) is roughly 1,214 mi², and Alaska is about 665,384 mi². This unit is standard in American geography, land surveying, and regional planning.
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 Miles (mi²) | Square Nautical Miles (nmi²) |
|---|---|
| 1 mi² | 0.75512 nmi² |
| 2 mi² | 1.51024 nmi² |
| 5 mi² | 3.7756 nmi² |
| 10 mi² | 7.5512 nmi² |
| 25 mi² | 18.878 nmi² |
| 50 mi² | 37.756 nmi² |
| 100 mi² | 75.512 nmi² |