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Answer: 1 km² = 0.386102 mi²
1 mile = 1.609344 kilometers 1 square mile = 2.589988 square kilometer 500,000 square miles = 1,294,994 square kilometers (rounded)
1 acre is 0.0040469 square kilometers.
1 (sq kilometer) = 247.105381 acres
1 square km of gravel