Convert square feet to square inches
Enter a square feet value below and convert to square inches
ft²
1 square foot =
144 square inches
* exact result
Select how many decimal places the result will be rounded to:
How to convert square feet to square inches
To convert square feet to square inches, multiply a square feet value by 144.
Formula in² = ft² × 144
Example: Convert 5 square feet to square inches Calculations: 5 ft² × 144 = 720 in²
Square foot (ft²)
The square foot is the imperial system's unit of area, defined as the area of a square with sides of 1 foot. It is equal to about 0.0929 square meters.
Square inch (in²)
The square inch is the imperial system's unit of area, defined as the area of a square with sides of 1 inch. It is equal to about 0.000645 square meters.