How do you convert square miles to square kilometers?

To convert square miles to square kilometers, multiply by 2.58998811. For example, 1 mi² is 2.589988 km².

How many square kilometers are in a square mile?

There are 2.58998811 square kilometers in one square mile.

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Converters · Area

1 Square miles to Square kilometers

1 mi² =

2.589988 km²

1 square miles equals 2.589988 square kilometers

How to convert square miles to square kilometers

To get square kilometers, multiply by 2.58998811.

km² = mi² × 2.58998811

Worked example: 1 × 2.58998811 = 2.589988 km².

Going the other way, multiply by 0.3861021585 — one square kilometer is 0.3861021585 square miles.

Values near 1 mi²

Square mile	Square kilometer
0.5 mi²	1.294994 km²
2 mi²	5.179976 km²
3 mi²	7.769964 km²

Square mile to Square kilometer — common values

Square mile	Square kilometer
1 mi²	2.589988 km²
2 mi²	5.179976 km²
3 mi²	7.769964 km²
5 mi²	12.949941 km²
10 mi²	25.899881 km²
25 mi²	64.749703 km²
50 mi²	129.499406 km²
100 mi²	258.998811 km²

Convert Square mile to other units

mi² → m² mi² → km² mi² → cm² mi² → ha mi² → ac mi² → ft² mi² → yd² mi² → in²

← Reverse: Square kilometer to Square mile

Questions

How do you convert square miles to square kilometers?: To convert square miles to square kilometers, multiply by 2.58998811. For example, 1 mi² is 2.589988 km².
How many square kilometers are in a square mile?: There are 2.58998811 square kilometers in one square mile.
How do you convert square kilometers back to square miles?: Go the other way: multiply by 0.3861021585. One square kilometer is 0.3861021585 square miles.

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