Units of measurement
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Square inch (in²)
Square foot (ft²)
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Square inch (in²)
A square inch (in²) is a unit of area in the British and American measurement systems, equal to a square with a side of 1 inch (2.54 cm).
Square foot (ft²)
A square foot (ft²) is a unit of area measurement widely used in construction and real estate, equal to 0.092903 m².