Convert square inches (in²) to square centimeters, meters, feet, and other area units.
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The square inch (in²) is a unit of area in the British Imperial system, equal to the area of a square with sides of one inch (2.54 cm). Used in electronics, print, and construction.
Common Square Inch Conversions
- 1 in² = 6.4516 cm² — exact value by definition.
- 1 in² = 645.16 mm² — one square inch equals 645 square millimeters.
- 1 in² ≈ 0.000645 m² — multiply by 0.000645 to get square meters.
- 1 in² ≈ 0.00694 ft² — one hundred forty-four square inches equal one square foot.
- 144 in² = 1 ft² — exact value by definition.
Square inches are used to express screen and sensor resolution — particularly in PPI (pixels per inch). They are also common in print and woodworking in the US.