Convert Square Kilometers to Square Miles
Convert Square Kilometers (km²) to Square Miles (mi²) instantly and accurately.
Conversion Formula
mi² = km² × 0.3861021585
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 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.
Quick Reference Table
| Square Kilometers (km²) | Square Miles (mi²) |
|---|---|
| 1 km² | 0.386102 mi² |
| 2 km² | 0.772204 mi² |
| 5 km² | 1.93051 mi² |
| 10 km² | 3.86102 mi² |
| 25 km² | 9.65255 mi² |
| 50 km² | 19.3051 mi² |
| 100 km² | 38.6102 mi² |