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Convert square mile to square kilometer

Here you can quickly calculate how many square kilometer fit in one square mile.
write a number and we convert instantly
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  • 1 mi² = 2.589988 km²
  • 1 km² = 0.386102 mi²

Example: square mile to square kilometer

  • 1 square mile = 2.589988 square kilometer

Square mile to square kilometer conversion table

square mile square kilometer
1 2.589988
2 5.179976
5 12.949941
10 25.899881
20 51.799762
50 129.499406
100 258.998811

Square mile to square kilometer formula

To convert square mile to square kilometer, multiply by 2.589988.

1 mi² = 2.589988 km²
Example: 1 square mile = 2.589988 square kilometer

Common area conversion mistakes

  • A hectare is 10,000 m², a 100 × 100 m square, and one square kilometer holds 100 hectares. News stories about wildfires and land plots often mix the two up. Rule of thumb: a football pitch is roughly 0.7 hectares.
  • For areas the length factor must be squared, using it directly is the classic trap. 1 km is 1,000 m, but 1 km² is 1,000,000 m², and 1 m² is 10,000 cm². The rule: convert the length unit, then square the factor.

Quick square mile and square kilometer conversion quiz

Score: 0

5 square mile equals 12.9 square kilometer.

Correct answer: 5 square mile = 12.9 square kilometer.

44 square mile equals 125 square kilometer.

Correct answer: 44 square mile = 114 square kilometer.

6.3 square mile equals 16.3 square kilometer.

Correct answer: 6.3 square mile = 16.3 square kilometer.

More area conversions