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Convert square kilometers to square miles

Convert square kilometers (km²) to square miles (mi²). 1 km² = 0.386102 mi², and 1 mi² = 2.58999 km².

1 km² = 0.386102 mi²

Square KM to Square Miles formula

mi² = km² × 0.3861021585

Multiply the number of square kilometers by 0.3861021585.

Example: To convert 1 km² to square miles: 1 × 0.3861021585 = 0.386102 mi².

Quick answers

What is 1 km² in square miles?
1 km² = 0.386102 mi²
What is 100 km² in square miles?
100 km² = 38.6102 mi²

Square KM to Square Miles conversion table

Square Miles to Square KM table
square kilometers (km²)square miles (mi²)
1 km²0.386102 mi²
2 km²0.772204 mi²
5 km²1.93051 mi²
10 km²3.86102 mi²
50 km²19.3051 mi²
100 km²38.6102 mi²
500 km²193.051 mi²
1,000 km²386.102 mi²
10,000 km²3,861.02 mi²
100,000 km²38,610.2 mi²

Frequently asked questions

How many square kilometers are in a square mile?

There are 2.58999 square kilometers in a square mile (1 mi² = 2.58999 km²), so 1 km² = 0.386102 mi².

How do I convert square kilometers to square miles?

Multiply the number of square kilometers by 0.3861021585. To convert 1 km² to square miles: 1 × 0.3861021585 = 0.386102 mi².

Is the Square KM to Square Miles conversion exact?

Yes. Both units are defined exactly, so 1 square kilometer is exactly 0.386102158542 square miles. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 km² in square miles?

1 km² = 0.386102 mi².

How do I convert square miles back to square kilometers?

Use the reverse relationship: 1 mi² = 2.58999 km². The Square Miles to Square KM page has a converter and a full table.

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