Square inches to square centimeters (in2 to cm2) area units conversion factor is 6.4516. To find out how many square centimeters in square inches, multiply the square inch value by 6.4516 or use the converter.
1 Square Inch = 6.4516 Square Centimeters
1 Square Centimeter = 0.15500031 Square Inch
There are 6.4516 square centimeters in a square inch, because one inch is 2.54 centimeters and the area of a square is calculated by multiplying a side by itself, that makes 2.54 * 2.54 = 6.4516 sq. centimeters in a sq. inch.
For example, to find out how many sq. centimeters there are in a square inch and a half, as a formula to convert from sq. inches to sq. centimeters, multiply the sq. inch value by 6.4516, that makes 1.5 in2 * 6.4516 = 9.6774 sq. centimeters in 1.5 sq. inches.
Square inch is an imperial and US customary area unit and defined as the area of a square with sides 1 inch in length. 1 square inch equals to 6.4516 sq. centimeters and 645.16 sq. millimeters. The abbreviation is "in2".
Square centimeter (centimetre is SI spelling) is a metric area unit and defined as the area of a square with sides 1 centimeter in length. 1 square centimeter equals to 0.155 sq. inches and 100 sq. millimeters. The abbreviation is "cm2".