Square Miles to Square Kilometers Converter
1 Square Mile = 2.58999 Square Kilometers
mi2
km2
1 mi2 = 2.58999 km2. To convert square miles to square kilometers, multiply by 2.58999; to convert back, multiply by 0.386102.
Conversion formula
1 mi2 = 2.58999 km2
To convert from Square Miles to Square Kilometers, multiply the value in square miles by 2.58999.
| Square Miles (mi2) | Square Kilometers (km2) |
|---|---|
| 0.001 | 0.00258999 |
| 0.01 | 0.0258999 |
| 0.1 | 0.258999 |
| 1 | 2.58999 |
| 2 | 5.17998 |
| 5 | 12.9499 |
| 10 | 25.8999 |
| 25 | 64.7497 |
| 50 | 129.499 |
| 100 | 258.999 |
| 250 | 647.497 |
| 500 | 1,294.99 |
| 1000 | 2,589.99 |
1 square mile in every area unit
| Square Meters | 2,589,990 m2 |
| Square Kilometers | 2.58999 km2 |
| Square Centimeters | 25,899,900,000 cm2 |
| Square Millimeters | 2.58999e+12 mm2 |
| Hectares | 258.999 ha |
| Acres | 640 ac |
| Square Yards | 3,097,600 yd2 |
| Square Feet | 27,878,400 ft2 |
| Square Inches | 4,014,490,000 in2 |
Frequently Asked Questions
How many square kilometers are in 1 square mile?
1 square mile equals 2.58999 square kilometers. So 10 square miles are 25.8999 square kilometers and 100 square miles are 258.999 square kilometers.
How do I convert square miles to square kilometers by hand?
Multiply the number of square miles by 2.58999. To go the other way, multiply square kilometers by 0.386102 (or divide by 2.58999).
How many square miles are in 1 square kilometer?
1 square kilometer equals 0.386102 square miles.