Measure the length of the space in feet
Measure the width of the space in feet
Multiply the length by the width
Use the formula: square feet = length × width
If the space is not a rectangle, divide it into smaller rectangles
Calculate the square feet of each smaller section
Add the square feet of all sections together
For triangles, multiply base by height and divide by 2
For circles, multiply 3.1416 by the radius squared
Make sure all measurements are in feet before calculating