Units of measurement
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Square mile (mi²)
Square millimeter (mm²)
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Square mile (mi²)
A square mile (mi²) is a large unit of area measurement used to describe large land areas and administrative regions. 1 mi² = 2.59 km².
Square millimeter (mm²)
A square millimeter (mm²) is a unit of area equal to a square with sides of 1 mm. It is used in engineering and drafting for small areas.