Drywall calculator
Estimate drywall sheets, screws, tape, joint compound, material cost, labor range, and a basic supply list.
Home Project Estimates
Drywall calculator
May 9, 2026
12 ft by 14 ft room, 8 ft walls.
Shopping list
- 4x8 drywall sheets15 ea
- Drywall screws480 ea
- Joint tape1 roll
- Joint compound2.0 gal
Assumptions
- 10% waste buffer
- 32 screws per sheet
- Openings are not deducted for a conservative planning estimate
- U.S. near average; pricing data: U.S. near average pricing
Planning estimate only. Not a contractor quote, engineering advice, or permit review.
Calculator setup
12 ft by 14 ft room, 8 ft walls.
Shopping list
- 4x8 drywall sheets15 ea
- Drywall screws480 ea
- Joint tape1 roll
- Joint compound2.0 gal
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Shared links include the current inputs and unit setting. Saved estimates stay local unless you enable Google Drive sync.
Assumptions in this estimate
- 10% waste buffer
- 32 screws per sheet
- Openings are not deducted for a conservative planning estimate
- U.S. near average; pricing data: U.S. near average pricing
No saved estimates yet.
What this calculator estimates
This drywall calculator starts from the measurements and options you enter, then estimates material quantity, waste, cost ranges, labor ranges, and a starter shopping list.
Results adapt to the selected region and unit settings, so the estimate is not locked to one market or measurement system.
Report confusing results, missing options, or assumptions that look off.
How this is calculated
- Wall area is 2 x (length + width) x height.
- Ceiling area is added when selected.
- Sheets are rounded up after waste is added.
Assumption register
| Item | Low | Typical | High | Source |
|---|---|---|---|---|
| Sheet sizes | 4x8 | 4x10 | 4x12 | Homewyse drywall installation cost calculator Checked 2026-06-21 · high confidence |
| Waste buffer | 5 | 10 | 15 | Homewyse drywall installation cost calculator Checked 2026-06-21 · medium confidence |
Last reviewed: May 9, 2026. These values are planning defaults, not live prices.
Common mistakes
- Forgetting ceiling area.
- Buying sheets without tape, screws, compound, and corner bead.
- Ignoring moisture-resistant, fire-rated, or soundproof drywall needs.
FAQ
Should openings be deducted?
For early planning, small openings can be ignored for a conservative sheet count.
Which sheet size should you choose?
4 x 8 sheets are easier to handle. Larger sheets can reduce seams.
Does this include finishing levels?
No. Finish level and texture change labor cost.
Can this drywall calculator estimate cost by region?
Yes. The calculator uses the selected region and unit settings to adapt quantities, cost ranges, labor ranges, and assumptions.
How should you use the result before buying materials?
Use the result as a planning estimate, then compare it with a current supplier cart, contractor quote, or local project conditions before committing.
Limitations
This calculator gives a rough material count. It does not account for fire-rated assemblies, moisture zones, sound assemblies, or finish levels.
This estimate is for planning only. It is not a contractor quote, engineering advice, or permit review.
Next step
Measure once more, compare the result with a real quote or shopping cart, and review the assumptions before buying materials.
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