Calculators / Drywall
Drywall Calculator
To calculate drywall, enter the wall length and height; this tool returns the number of standard 4×8 sheets you need plus a cost estimate. One 4×8 sheet covers 32 square feet.
Real math, not AI guesses.
You need
4 sheets
Estimated cost
~$60
- Wall area
- 96 sq ft
- With 10% waste
- 106 sq ft
- 4×8 sheets (32 sq ft each)
- 4
Estimate only — actual quantities and prices vary by region and supplier. Verify with a professional before purchasing. Default price is a national average (as of 2026-06); edit it to match your supplier.
How to calculate drywall
The formula: sheets = ceil( wall area × (1 + waste) ÷ 32 )
- Measure the length and height of the wall (or total wall area) in feet.
- Multiply length × height to get the area in square feet.
- Add about 10% for waste, cuts, and mistakes.
- Divide by 32 (a 4×8 sheet) and round up to get the number of sheets.
Prices shown are national averages (as of 2026-06) and vary by region, brand, and supplier. They are estimates, not quotes.
Drywall FAQ
How many sheets of drywall do I need for a 12×8 wall?+
A 12 ft × 8 ft wall is 96 square feet. With 10% waste that is about 106 sq ft, or 4 sheets of 4×8 drywall (32 sq ft each).
What size drywall sheet should I use?+
4×8 ft is the most common and easiest to handle. 4×12 sheets cover more area with fewer seams but are heavier and harder to move.