Square Kilometers to Square Miles

Convert km² to mi² — free online area converter

1 km² = 0.38610217 mi²

Square Kilometers to Square Miles Quick Reference

km²mi²
0.10.0386102175
0.50.1930510875
10.386102175
20.77220435
51.930510875
103.86102175
207.7220435
5019.30510875
10038.6102175
500193.0510875
1,000386.102175

How to Convert Square Kilometers to Square Miles

This free online converter lets you instantly convert Square Kilometers (km²) to Square Miles (mi²). Simply enter a value and the result updates automatically. Use the swap button to reverse the conversion.

The quick reference table below shows common Square Kilometers values and their Square Miles equivalents. All calculations are performed locally in your browser — fast, private, and accurate.

FAQ
How many Square Miles are in one Square Kilometers?
One Square Kilometers (km²) equals 0.38610217 Square Miles (mi²).
How do I convert Square Kilometers to Square Miles?
Multiply the Square Kilometers value by 0.38610217. For example, 10 km² = 3.8610217 mi².
How do I convert Square Miles back to Square Kilometers?
Multiply the Square Miles value by 2.589988, or use the swap button. One mi² = 2.589988 km².
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