Convert square mile to square kilometer

Here you can quickly calculate how many square kilometer fit in one square mile.

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Conversion from square mile to square kilometer example

Starting value Increment Accuracy

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

1 mi² = 2.589988 km²

Example: 1 square mile = 2.589988 square kilometer

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.

Score: 0

3.7 square kilometer equals 1.43 square mile.

Correct answer: 3.7 square kilometer = 1.43 square mile.

18.3 square mile equals 47.4 square kilometer.

Correct answer: 18.3 square mile = 47.4 square kilometer.

187 square kilometer equals 65 square mile.

Correct answer: 187 square kilometer = 72.2 square mile.