MyYardCalcHow to use this drywall calculator
Subtract openings once from the combined surface you are covering. Multiple rooms can be estimated separately using their own dimensions.
Area-based sheet counts do not optimize board layout, seams or offcuts. Use an allowance and check sheet orientation around openings.
Sheets = ceil(net wall and selected ceiling area × allowance factor ÷ sheet area).
A worked example
With the example values shown below, the calculated result is 12 sheets. These are demonstration inputs, not installation specifications.
View the example measurements
- Room length: 12 ft
- Room width: 10 ft
- Wall height: 8 ft
- Openings to subtract: 21 sq ft
- Sheet width: 4 ft
- Sheet length: 8 ft
- Extra allowance: 10 %
From estimate to order
Whole packages and pieces round up; measured lengths, areas and volumes keep full precision during calculation. Match the product dimensions and units to your quote, and check cuts, minimum orders and delivery before purchasing.