Sorry to be pedantic but unlike m to km sq m to sq km is not x 1.6, it's closer to 2.6 because a sq mile will be 1.6 x 1.6. Because a mile is a bit more than 1600m it will be just shy of 2.59.
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Yeah fair point, the conversion always messes with me. I've tried to use the straight meter values in my later replies.