The estimate requires 19 whole sheets.
Home & Construction calculator
Drywall and Plasterboard Calculator
Use total wall or ceiling area, subtract openings and match the sheet size available from your supplier.
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No account. Formula and assumptions are shown below.
Calculator inputs
Drywall sheets details
Formula & disclaimer
Sheets = Ceiling(((Gross Area β Openings) Γ Layers Γ (1 + Waste)) Γ· Sheet Area)
View assumptionsFormula reviewCalcs at Hand Editorial TeamVerified 31 August 2026 Β· automated checks included
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Resultβ
Projection
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Formula & details
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How to read this result
Three useful checks, kept deliberately short.
55 mΒ² surface, 7 mΒ² openings, 2.4 Γ 1.2 m sheets, one layer and 10% waste: Find net area Β· Apply layers and waste Β· Divide by sheet area and round up.
Orientation, staggered joints and small offcuts can affect usable coverage.
Formula and assumptions
Sheets = Ceiling(((Gross Area β Openings) Γ Layers Γ (1 + Waste)) Γ· Sheet Area)The calculator estimates sheet coverage, not framing, screws, joint tape or finishing compound.
Keep in mind: Confirm fire, moisture, acoustic and fixing requirements for the selected board system.
Produced byCalcs at Hand Editorial Team
Last formula check31 August 2026
Review methodKnown examples + boundary cases
Editorial and correction policy β