Measure the length of the space
Measure the width of the space
Multiply length by width
Use the same unit for both measurements
Convert inches to feet if needed by dividing by 12
Convert yards to feet if needed by multiplying by 3
For irregular shapes, divide the area into smaller rectangles
Calculate each section separately
Add all section areas together
For triangles, multiply base by height and divide by 2
For circles, multiply pi by radius squared
Subtract areas of openings if needed
Round the final result if desired