Plasterboard Calculator
Work out how many plasterboard sheets you need for a wall or ceiling.
Plasterboard sheets
4sheets
- Surface area
- 9.6 m²
v1.0 · Reviewed September 2026
How this is worked out
Surface area is divided by the area of one sheet, multiplied by any waste allowance, then rounded up to whole sheets.
Worked example
- Length 4 m
- Height 2.4 m
- Sheet 2400 × 1200 mm
- No waste allowance
9.6 m² ÷ 2.88 m² = 3.33, rounded up
4 sheets
Assumptions and limits
- Rounding up by area assumes offcuts can be used elsewhere. Awkward rooms and short cuts usually need more.
- Fixings, scrim, jointing compound and openings are not accounted for.