About Drywall Calculator
Plan sheet quantities from either wall dimensions or known area with optional ceiling and opening adjustments.
Inputs and calculations stay in your browser and require no signup.
How the calculation works
Planning calculation
Net area = wall + ceiling − openings; sheets round up after applying waste to net area.
How to use this calculator
- 1Enter measured project dimensions and quantities.
- 2Adjust material, spacing, waste or density assumptions to match the project.
- 3Review the live planning quantities.
- 4Round purchasing quantities appropriately and confirm field conditions.
Understanding the result
Screws, tape and compound are approximate planning allowances tied to sheet count or net area.
Results use the units shown beside each field and output.
Important limitations
- Fastener schedules, finish level, framing spacing and board layout affect actual consumption.
- Tape and compound allowances are approximate and should be checked against product coverage.
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Frequently asked questions
Can I subtract doors and windows?
Yes. Enter their combined opening area.
Can I include a ceiling?
Yes. Ceiling area is optional and added before openings are subtracted.
Are screws exact?
No. They are a clearly labeled planning allowance.
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