Calculate wall area using wall width and height measurements. Optionally subtract doors and windows to estimate paintable or coverable wall space in square feet, square yards, and square meters.
Feet formula:
Wall area = width (ft) × height (ft)
Metric formula:
Wall area = width (m) × height (m)
This calculator can also subtract doors and windows and convert the result into square yards and square meters.
Knowing wall area helps when estimating paint, wallpaper, wall tile, drywall, panels, and other covering materials for home improvement projects.
Adding extra material is often useful when ordering supplies that involve cuts or waste.
Your gross wall area is the full rectangular wall size before deductions. Net wall area is the remaining usable area after subtracting door and window openings.
The adjusted total with extra material can help when ordering paint, tile, drywall, or other products where waste, overlap, or cutting adjustments may be needed.
Multiply wall width by wall height. For example, a 12 ft by 8 ft wall is 96 square feet.
Usually yes for paint, tile, wallpaper, and similar material estimates, especially when the openings are large.
Yes. Net wall area is a helpful starting point for estimating paint coverage after subtracting openings.
Yes for many projects. Extra material helps cover waste, overlap, cuts, and installation adjustments.