There cannot be one.
Feet and inches are a measure of distance or length while square footage is a measure of area. The two measure different things and, according to elementary principles of dimensional analysis conversion from one to the other is not valid.
25 square feet.
Use this formula to convert from square inches to square feet, : square inches x 0.00694 = square feet
30 feet by 28 feet equals 840 square feet. 30 inches by 28 inches equals 840 square inches, or 5.833 square feet.
Convert the inches to feet (dividing by 12), then multiply. The result is then in square feet.
37ft by 40 inches is an area of 123.3 square feet.
If you are referring to 16 feet by 30 feet the formula would simply be 16x30=480.If it were inches, the formula is 16x30=480 divided by 144 = 3.333 square feet. The 144 is a constant in that formula.
25 square feet.
Use this formula to convert from square inches to square feet, : square inches x 0.00694 = square feet
45.33 square feet.
It is: 2 feet times 2 feet = 4 square feet
195 inches = 16.25 feet and 18 inches = 1.5 feet 16.25*1.5 = 24.375 square feet.
30 feet by 28 feet equals 840 square feet. 30 inches by 28 inches equals 840 square inches, or 5.833 square feet.
Convert the inches to feet (dividing by 12), then multiply. The result is then in square feet.
37ft by 40 inches is an area of 123.3 square feet.
Square inches x 0.00694 = square feet
Square inches x 0.00694444 = square feet
41 feet 5 inches x 27 feet = 1,118.25 square feet.