Square footage for rooms, floors, walls, and projects
Square footage is the standard area measurement used for flooring, painting, landscaping, roofing estimates, and real estate. This calculator multiplies length by width, supports repeated areas, and can add a waste factor for cuts, mistakes, and irregular shapes.
square feet = length in feet x width in feet x quantity
Where:
length=
The long side of the area after converting to feetwidth=
The short side of the area after converting to feetquantity=
The number of matching areas being measuredHow to calculate square footage
Measure the length and width of the area. Convert both measurements to feet. Multiply length by width to get square feet. If you have multiple matching areas, multiply by the quantity. For project materials, add a waste percentage before buying supplies.