Measure the length of the space in feet
Measure the width of the space in feet
Multiply length by width
Use the formula: square footage = length × width
For irregular shapes, divide the area into smaller rectangles
Measure each section separately
Calculate the square footage of each section
Add the square footage of all sections together
For triangles, use the formula: base × height ÷ 2
For circles, use the formula: π × radius × radius
Round measurements to the nearest inch or tenth of a foot if needed
Double-check all measurements before calculating