Plasterboard Sheets Calculator
Estimates the number of plasterboard sheets needed from the wall area.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the wall length and height.
- Press Calculate.
How it works
Sheets = wall area ÷ the area of one sheet (a standard 2.4 × 1.2 m sheet is 2.88 m²).
Worked example
6 × 2.4 m wall. 14.4 m² = 5 sheets.
Common mistakes
- Not deducting large openings, but keeping a margin for offcuts around windows and doors.
- Ignoring sheet orientation; horizontal versus vertical fixing changes joints and counts.
Frequently asked questions
How many plasterboard sheets do I need?
Divide the wall and ceiling area by one sheet's area, then add about 10% for cuts and waste.
What size plasterboard should I use?
Common sheets are 1200 mm wide in 2400–3600 mm lengths; longer sheets mean fewer joints to set but are heavier to handle.
Does this account for windows, doors and waste?
No — it's the gross wall area. Subtract large openings, then add ~10–15% for offcuts and waste when ordering.
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Cite this tool
Zerdly. (2026). Plasterboard Sheets Calculator. Retrieved from https://www.zerdly.com/tools/plasterboard-sheets-calculator/
Tip: Enter any known values to calculate the remaining results.
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