Plasterboard calculator
Work out how many sheets of plasterboard you need for a wall or ceiling.
Uses only the sizes you enter.
Result
You need 4 sheets for 9.6 square metres, with 10% extra.
sheets
| Area covered | 11.52 m² |
|---|---|
| Area needed | 10.56 m² |
Show the workings
| Step | Sum | Answer |
|---|---|---|
| Area | 4 m × 2.4 m | 9.6 m² |
| Area of one sheet | 1.2 m × 2.4 m | 2.88 m² |
| Area with 10% extra | 9.6 × 1.1 | 10.56 m² |
| Sheets | 10.56 m² ÷ 2.88 m² each, rounded up | 4 sheets |
Where the figures come from
This sum uses only the numbers you entered.
How many sheets of plasterboard?
Work out the area of the wall or ceiling, then divide by the area of one sheet: its width times its length, in metres. A wall 4 m long and 2.4 m high is 9.6 m², and a sheet 1.2 m by 2.4 m covers 2.88 m², so 9.6 ÷ 2.88 = 3.33, or 4 sheets.
Sheets come in several sizes and thicknesses: use the size you are buying.