Drywall Calculator
Estimate drywall sheets, mud, screws, and tape
Length of the room
Width of the room
Standard: 8 or 9 ft
Also drywall the ceiling?
Standard sizes
Total Area
—
sq ft
Drywall Sheets
—
sheets
Screws Needed
—
screws
Joint Compound
—
gallons
Tape Needed
—
feet
Estimated Cost
—
USD
How to Use This Calculator
Our drywall calculator estimates sheets, screws, joint compound, and tape for walls and ceilings.
- Measure room dimensions
- Decide on ceiling drywall
- Select sheet size
- Enter measurements
- Add 10% waste
AI Insights
Smart analysis for your project
Smart Estimates
Our AI cross-references material costs, regional pricing, and project complexity for more accurate estimates.
Waste Optimization
AI-calculated waste factors based on project type, not flat percentages. Saves 5-15% on material costs.
Best Practices
Recommendations derived from building codes, contractor data, and thousands of completed projects.
Calculation Formula
Wall area = 2 x (L + W) x H
Sheets = Total area / Sheet area + 10% waste
Screws ~ 32 per sheet
Mud ~ 0.05 gal/sq ft
Frequently Asked Questions
How many drywall sheets for 12x12 room?
About 16 sheets of 4x8 drywall (10 walls + 6 ceiling). Add 10% waste.
Should I use 1/2" or 5/8" drywall?
1/2" for walls with 16" stud spacing. 5/8" for ceilings (prevents sagging) and fire-rated walls.