Drywall Calculator for Room Walls
Calculate drywall sheets and screws for a rectangular wall from its dimensions, sheet size and cutting allowance.
Formula
Planning estimate. Check product specifications and local requirements before purchasing.
Worked example: Drywall Calculator
Measurements in this example
| Length | 5 m |
|---|---|
| Height | 2.7 m |
| Sheet width | 1.2 m |
| Sheet height | 2.5 m |
| Waste allowance | 10 % |
Calculated quantities
| Area | 13.5 m² |
|---|---|
| Sheets | 5 |
| Screws | 160 |
What to check
This calculation uses: Length, Height, Sheet width, Sheet height, Waste allowance. It returns: Area, Sheets, Screws.
Measure each face to the true edge and mark openings. Plan sheet orientation before deciding how much of an offcut can be reused.
A total sheet count does not place joints. Framing layout, edge support, expansion gaps and fastening schedule remain essential.
Use the units beside each field. The values in the worked example are starting inputs; replace them with your measurements and the specifications of your material.
Compare alternatives
Open a tool, enter your measured dimensions, then save an estimate. Keep another version if you want to compare products or allowances.