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Square miles to square kilometers

Convert square miles (mi²) to square kilometers (km²) instantly. 1 square mile = 2.58999 square kilometers.

Quick answer: 1 square mile equals 2.58999 km². To convert square miles to square kilometers, multiply the value by 2.58999.

Good to know

Quick reference

mi²km²
12.58999
25.17998
512.9499
1025.8999
2564.7497
50129.499
100258.999

Frequently asked questions

How many square kilometers are in 1 square mile?

There are 2.58999 square kilometers in 1 square mile.

How do I convert square miles to square kilometers?

Multiply the number of square miles by 2.58999.

How do I convert square kilometers back to square miles?

Divide by 2.58999, or multiply by 0.386102.

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