Convert Square Miles (mi²) to Square Kilometers (km²)
Enter a value below to convert Square Miles (mi²) to Square Kilometers (km²).
Conversion:
1 Square Miles (mi²) = 2.5899881103 Square Kilometers (km²)
How to Convert Square Miles (mi²) to Square Kilometers (km²)
1 mi2 = 2.5899881103 km2
1 km2 = 0.38610215854 mi2
Example: convert 15 Square Miles (mi²) to Square Kilometers (km²):
25 mi2 = 64.749702758 km2
Square Miles (mi²) to Square Kilometers (km²) Conversion Table
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 0.01 mi2 | 0.025899881103 km2 |
| 0.1 mi2 | 0.25899881103 km2 |
| 1 mi2 | 2.5899881103 km2 |
| 2 mi2 | 5.1799762207 km2 |
| 3 mi2 | 7.769964331 km2 |
| 5 mi2 | 12.949940552 km2 |
| 10 mi2 | 25.899881103 km2 |
| 20 mi2 | 51.799762207 km2 |
| 50 mi2 | 129.49940552 km2 |
| 100 mi2 | 258.99881103 km2 |
| 1000 mi2 | 2589.9881103 km2 |
Square Miles (mi²)
Definition
A square mile (mi²) is an imperial unit of area equal to the area of a square with sides of 1 mile. It equals 640 acres or approximately 2.59 square kilometers.
History
The square mile has been used since the establishment of the statute mile in England. As settlements expanded, the square mile became the standard for measuring large tracts of land, counties, and states.
Current use
Square miles are used primarily in the United States and the United Kingdom to express the area of cities, counties, states, and natural parks. Population density is often stated in people per square mile.
Square Kilometers (km²)
Definition
A square kilometer (km²) is a metric unit of area equal to 1,000,000 square meters or 100 hectares. It represents the area of a square with sides of 1 kilometer.
History
The square kilometer naturally followed the adoption of the metric system and the kilometer as a standard unit of distance. It became the standard large-scale area unit for geography, demographics, and national statistics.
Current use
Square kilometers are used worldwide to express the area of cities, regions, countries, lakes, and large geographic features. It is the standard unit in national census data and geopolitical comparisons.