Square Inch (in²)

A square inch (in² or sq in) equals 6.4516 square centimeters or 645.16 square millimeters. Square inches measure small surfaces, screen sizes, and component dimensions. Monitor/TV screens are measured diagonally, but area is calculated in square inches.

Convert From Square Inches

Square Inch to Square Kilometer Square Inch to Hectare Square Inch to Square Meter Square Inch to Square Centimeter Square Inch to Square Millimeter Square Inch to Square Mile Square Inch to Acre Square Inch to Square Yard square inches to square feet

Convert To Square Inches

Square Kilometer to Square Inch Hectare to Square Inch Square Meter to Square Inch Square Centimeter to Square Inch Square Millimeter to Square Inch Square Mile to Square Inch Acre to Square Inch Square Yard to Square Inch square feet to square inches

Conversion Factors

1 in² 6.4516e-10 km²

1 in² 6.4516e-8 ha

1 in² 0.00064516 m²

1 in² 6.4516 cm²

1 in² 645.16 mm²

1 in² 2.4909766861e-10 mi²

1 in² 1.5942250791e-7 acre

1 in² 0.0007716049 yd²

1 in² 0.0069444444 ft²

Related Units

Square Kilometer (km²) Hectare (ha) Square Meter (m²) Square Centimeter (cm²) Square Millimeter (mm²) Square Mile (mi²) Acre (acre) Square Yard (yd²) Square Foot (ft²)