Measure the length of the area in feet
Measure the width of the area in feet
Multiply length by width
Use the formula: square footage = length × width
For irregular shapes, divide the area into smaller rectangles
Calculate the square footage of each section
Add all section totals together
For triangles, use the formula: (base × height) ÷ 2
For circles, use the formula: π × radius²
Convert inches to feet before calculating if needed
Round to the nearest whole number if required