Square Miles to Square Kilometers

1 mi² = 2.589988 km²

How to convert square miles to square kilometers

km² = mi² × 2.589988

Example: 5 mi² = 12.94994 km²

Square Miles to Square Kilometers conversion table

Square Miles (mi²)Square Kilometers (km²)
1 mi²2.589988 km²
2 mi²5.179976 km²
3 mi²7.769964 km²
4 mi²10.35995 km²
5 mi²12.94994 km²
6 mi²15.53993 km²
7 mi²18.12992 km²
8 mi²20.7199 km²
9 mi²23.30989 km²
10 mi²25.89988 km²
15 mi²38.84982 km²
20 mi²51.79976 km²
25 mi²64.7497 km²
30 mi²77.69964 km²
40 mi²103.5995 km²
50 mi²129.4994 km²
75 mi²194.2491 km²
100 mi²258.9988 km²
250 mi²647.497 km²
500 mi²1,294.994 km²
1,000 mi²2,589.988 km²

About the units

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

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.

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Frequently asked questions

How many square kilometers are in 1 square mile?

1 square mile equals 2.589988 square kilometers.

How many square miles are in 1 square kilometer?

1 square kilometer equals 0.3861022 square miles.

How do I convert square miles to square kilometers?

Use the formula km² = mi² × 2.589988.

What is 10 square miles in square kilometers?

10 square miles equals 25.89988 square kilometers.

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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