Wall Square Footage
Calculate wall square footage from length and height for painting, drywall, and construction projects. Free wall area calculator with paint coverage estimates.
About This Calculator
The Wall Square Footage Calculator helps you quickly determine the area of any wall by entering its length and height. This is essential for estimating paint, wallpaper, drywall, tiles, paneling, and other wall covering materials for home improvement and construction projects.
The area is calculated using the simple formula Area = Length x Height. For example, a wall that is 12 feet long and 8 feet high has a total area of 96 square feet. The calculator also estimates how many gallons of paint you need based on standard coverage of 350 sq ft per gallon.
Material Estimation Tips
- Paint: 1 gallon covers ~350 sq ft per coat. For two coats, double the gallons needed.
- Drywall: A standard 4x8 ft sheet covers 32 sq ft. Divide total area by 32 and add 10% for waste.
- Wallpaper: A standard roll covers ~57 sq ft. Check your specific wallpaper roll coverage.
- Tiles: Add 10-15% extra for cuts, waste, and breakage when ordering tiles.
Frequently Asked Questions
How do you calculate wall square footage?
Wall square footage is calculated by multiplying the wall length by its height: Area = Length x Height. For example, a 12 ft long wall that is 8 ft high has an area of 96 sq ft.
How much paint do I need for a wall?
One gallon of paint typically covers approximately 350 sq ft. Divide your total wall area by 350 and round up to find the number of gallons needed for one coat.
Should I subtract windows and doors from wall area?
Yes, for accurate material estimates, subtract the area of windows (approx 15 sq ft each) and doors (approx 20 sq ft each) from the total wall area before calculating paint or material needs.
Can I use this for drywall estimation?
Yes, this calculator helps estimate drywall needs. A standard 4x8 ft drywall sheet covers 32 sq ft. Divide your total wall area by 32 and round up for the number of sheets needed.
Is this calculator free to use?
Yes, it is completely free to use with no registration or hidden charges.
Can I share my wall area calculation?
Yes, the URL saves your wall dimensions so you can bookmark or share the exact calculation with contractors or suppliers.
How many square feet is a 10x10 wall?
A 10x10 wall has 100 square feet. Multiply the length (10 ft) by the height (10 ft) to get 100 sq ft.
How many drywall sheets do I need for a wall?
Divide the total wall area by 32 (the area of a standard 4x8 ft drywall sheet) and round up. Add 10% for waste to get the final sheet count.