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Drywall Cost Calculator

Drywall cost is driven by sheet count, unit price, and waste for offcuts. This calculator also supports labor cost for installation, giving a full project estimate.

What Is Drywall Cost?

Drywall cost estimates the total material and labor expense for installing drywall sheets. It is calculated from sheet count, price per sheet, and a waste allowance for offcuts. Adding labor gives a complete budget for walls and ceilings.

Formula: Sheets x Price per sheet x (1 + Waste%)

Example

Formula: Sheets x Price per sheet x (1 + Waste%)
= 40 x 12 x (1 + 5%)
= 504.00

Enter total sheets, price per sheet, and waste percentage to estimate cost.

Tip: Add extra sheets for offcuts and mistakes.

Step-by-step calculation

  1. Enter total sheet count.
  2. Add price per sheet.
  3. Include waste and calculate cost.

How this is calculated

Cost = sheet count times sheet price plus joint compound, tape, and fasteners; labor is estimated separately per m² of surface.

Sources: ASTM C1396 (Gypsum Board).

FAQ

How do I calculate drywall cost by hand?
Multiply sheet count by price per sheet, then by (1 + waste%). Add labor if needed.
What is the formula for drywall cost?
Cost = Sheets x Price per sheet x (1 + Waste%). Example: 40 x 12 x 1.05 = 504.
Drywall vs plaster cost
Drywall is faster to install but may need finishing; plaster is seamless but labor-intensive.
What units should I use?
Use count for sheets, currency for price, and % for waste.
Can I use this for a ceiling?
Yes. Enter ceiling sheet count and price to estimate ceiling drywall cost.

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