Whether you’re planning to paint, wallpaper, tile, or drywall a space, the first step is knowing the square footage of your walls. Our Wall Square Footage Calculator helps you quickly find out how much surface area your walls cover so you can estimate material needs with ease.
This tool is perfect for homeowners, DIYers, and contractors looking to save time and avoid overbuying.
Wall Square Footage Calculation Formulas
1. Wall Area (Single Wall)
To calculate the wall area of a single wall, you simply multiply the height of the wall by its width. This gives you the total surface area in square feet (or square meters).
Wall Area=Wall Height×Wall Width
2. Total Area for Multiple Walls
If you have more than one wall of the same size, you can find the total wall area by multiplying the area of one wall by the number of walls.
Total Wall Area=Wall Area×Number of Walls
3. Net Wall Area (after removing doors/windows)
Finally, if your walls have openings like windows or doors, you can find the net wall area by subtracting the total area of those openings from the total wall area. This net area is what you'll actually need materials for, like paint or wallpaper.
Net Wall Area=Total Wall Area−Opening Area
Example Calculation
Let’s say you have 4 walls, each 8 feet high and 12 feet wide, and the total window and door area is 40 square feet.
Step-by-step:
Wall Area
Wall Area=8×12=96 sq ft
Total Wall Area
Total Wall Area=96×4=384 sq ft
Net Wall Area
Net Wall Area=384−40=344 sq ft
Conclusion
With our Wall Square Footage Calculator, you can eliminate guesswork and accurately plan for your next renovation or construction project. Simply enter your wall dimensions, and in seconds, get the precise area — perfect for estimating materials like paint, wallpaper, or drywall.
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