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Convert square kilometer to square mile

Here you can quickly calculate how many square mile fit in one square kilometer.
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  • 1 km² = 0.386102 mi²
  • 1 mi² = 2.589988 km²

Example: square kilometer to square mile

  • 1 square kilometer = 0.386102 square mile

Square kilometer to square mile conversion table

square kilometer square mile
1 0.386102
2 0.772204
5 1.930511
10 3.861022
20 7.722043
50 19.305108
100 38.610216

Square kilometer to square mile formula

To convert square kilometer to square mile, multiply by 0.386102.

1 km² = 0.386102 mi²
Example: 1 square kilometer = 0.386102 square mile

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 kilometer and square mile conversion quiz

Score: 0

172 square mile equals 512 square kilometer.

Correct answer: 172 square mile = 445 square kilometer.

215 square kilometer equals 70.6 square mile.

Correct answer: 215 square kilometer = 83 square mile.

12 square kilometer equals 4.63 square mile.

Correct answer: 12 square kilometer = 4.63 square mile.

More area conversions