Square Kilometers to Square Miles

1 km² = 0.3861022 mi²

How to convert square kilometers to square miles

mi² = km² × 0.3861022

Example: 5 km² = 1.930511 mi²

Square Kilometers to Square Miles conversion table

Square Kilometers (km²)Square Miles (mi²)
1 km²0.3861022 mi²
2 km²0.7722043 mi²
3 km²1.158306 mi²
4 km²1.544409 mi²
5 km²1.930511 mi²
6 km²2.316613 mi²
7 km²2.702715 mi²
8 km²3.088817 mi²
9 km²3.474919 mi²
10 km²3.861022 mi²
15 km²5.791532 mi²
20 km²7.722043 mi²
25 km²9.652554 mi²
30 km²11.58306 mi²
40 km²15.44409 mi²
50 km²19.30511 mi²
75 km²28.95766 mi²
100 km²38.61022 mi²
250 km²96.52554 mi²
500 km²193.0511 mi²
1,000 km²386.1022 mi²

About the units

Square Kilometers: The square kilometer is a metric unit of area equal to 1,000,000 square meters, used for the area of cities, regions and countries.

Square Miles: The square mile is an imperial and US customary unit of area equal to 640 acres, or about 2.59 square kilometers.

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Frequently asked questions

How many square miles are in 1 square kilometer?

1 square kilometer equals 0.3861022 square miles.

How many square kilometers are in 1 square mile?

1 square mile equals 2.589988 square kilometers.

How do I convert square kilometers to square miles?

Use the formula mi² = km² × 0.3861022.

What is 10 square kilometers in square miles?

10 square kilometers equals 3.861022 square miles.

Related conversions

Sources

Conversion factors use the exact definitions published by NIST and the BIPM, and are checked by automated tests against those definitions.

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