Square inches to square feet (in2 to ft2) conversion factor is 0.00694 (there are 144 sq. inches in 1 sq. foot). To find out how many sq. feet in sq inches, multiply the square inch by the conversion factor or use the converter.
1 Sq. Inch = 0.00694444444 Sq. Foot
There are 0.0069444 square feet in a square inch, because one inch equals to 0.0833333 foot (1/12 foot) and the area of a square is calculated by multiplying a side by itself, that makes 0.0833333 * 0.0833333 = 0.0069444 sq. feet in a sq. inch.
For example, to find out how many sq. feet there are in 100 sq. inch, as a formula to convert from sq. inches to sq. feet, multiply the sq. inch value by 0.0069444, that makes 100 in2 * 0.0069444 = 0.694 sq. feet in 100 sq. inches.
Square inch is an imperial and US Customary area unit and equals to 0.00694 sq. feet, 6.4516 sq. centimeters and 645.16 sq. millimeters. The abbreviation is "in2".
Square foot is an imperial and US Customary area unit and equals to 144 sq. inches, 0.11 sq. yards and 929.03 sq. centimeters. The abbreviation is "ft2".