About the Drywall Calculator
Plasterboard sheets, screws, joint compound and tape for a room.
Also known as: plasterboard calculator, sheetrock calculator, gypsum board quantity, drywall sheets needed.
How to use this calculator
- Enter area to cover, sheet size, cutting waste, layers and the other fields.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
sheets = area × layers × (1 + waste) ÷ sheet area
Worked example
Using the values pre-filled in the calculator above:
- Area to cover = 60 m²
- Sheet size: 2400 × 1200 mm (2.88 m²)
- Cutting waste = 10 %
- Layers: Single layer
- Price per sheet = 9
the calculator returns:
- Sheets required: 23
- Total board area: 66 m²
- Screws (approx): 1,848
- Joint compound: 29.7 kg