Use our free square foot calculator to help take the guesswork out of measuring the square footage of a room, garden area, or any other space. There are numerous jobs you might be doing around the house or yard that will require you to figure how many square feet are in a certain area.
If you are mulching a flower bed, knowing the square footage of the area is essential to knowing how much mulch you should purchase. If you are laying carpet in your home, then you will need to calculate how many square feet are in each room to figure out how much carpet will be needed for the job. In addition to taking the guesswork out of many do-it-yourself jobs, this calculator can also be beneficial for students who may need help with various math problems.
Square Foot Formulas
When it comes to the formulas used for calculating total square footage, you are simply determining the area of the shape in question, using very geometry math. The most common square feet area formulas are:
- Square: A = s2 (Side Squared)
- Rectangle: A = ab (Side A x Side B)
- Circle: A = πr2 (Pi x Radius Squared)
How To Calculate Square Footage
Learning how to calculate square footage is easy. To quickly calculate square feet without doing the math by hand, simply enter the dimensions of any object shape into the calculator below and leave the number crunching to us. If you need to make these calculations but don’t have access to a square foot calculator, you can easily memorize the formulas listed above.
