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Drywall Calculator — Free Online Calculator

Calculates the number of drywall sheets required for walls or partitions.

What is it?

The drywall (plasterboard) calculator works out how many sheets you need to clad walls or a ceiling, allowing for the number of layers and a cutting margin.

Formula

Sheets = ⌈area × layers / sheet area × (1 + waste / 100)⌉ Standard sheet: 1200 × 2500 mm = 3.0 m²

Example

40 m² of walls, 1 layer, sheet 1.2 × 2.5 m, 10% waste. Sheets: ⌈40 × 1 / 3.0 × 1.1⌉ = ⌈14.67⌉ = 15 sheets.

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