Square Km to Square Miles
Convert square kilometres to square miles easily. Free sq km to sq miles converter.
Formula
sq mi = sq km × 0.386102
Common Conversions
How to Convert Square Km to Square Miles
1 sq km = 0.3861 sq miles. Multiply sq km by 0.3861 (or divide by 2.59) to get square miles. So 100 sq km × 0.3861 = 38.61 sq mi. The conversion factor is the square of the linear km-to-miles conversion (0.621²).
Used for converting European/metric area data to imperial areas. France: 643,801 sq km = 248,573 sq mi. Spain: 505,990 sq km = 195,365 sq mi. Germany: 357,386 sq km = 137,988 sq mi. Italy: 301,338 sq km = 116,347 sq mi.
Common Square Km to Square Miles
| Square Km | Square Miles |
|---|---|
| 1 sq km | 0.39 sq mi |
| 10 sq km | 3.86 sq mi |
| 100 sq km | 38.61 sq mi |
| 500 sq km | 193.05 sq mi |
| 1000 sq km | 386.10 sq mi |
| 10000 sq km | 3861.02 sq mi |
| 100000 sq km | 38610.22 sq mi |
| 1000000 sq km | 386102.16 sq mi |
Frequently Asked Questions
How big is Greater London?
1,572 sq km = 607 sq mi. Total London Borough area. London proper (the historic City of London) is about 2.9 sq km = 1.12 sq mi - tiny. The much larger Greater London consists of 32 boroughs covering roughly 1,500 sq km.
How does this compare to acres?
1 sq km = 247.1 acres = 100 hectares. 1 sq mi = 640 acres. Useful for converting agricultural data: a 100-acre farm = 0.405 sq km = 0.156 sq mi.
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