Drywall Calculator

Estimate drywall sheets, joint compound and screws.

Room length (ft)

Room width (ft)

Wall height (ft)

Door area (sq ft)

Window area (sq ft)

Waste (%)

Estimate

How to use this calculator

Enter your project measurements and allowances. The estimate updates instantly. Round ordering quantities up and confirm product coverage with your supplier.

Formula

Wall area = perimeter × height, plus ceiling area, minus openings.

Planning tip

Field conditions, cuts, overlaps, compaction and local building requirements can change actual material needs. Use this result as a planning estimate and verify critical structural details with a qualified professional.

Frequently asked question

Should I include waste?

Yes. Most projects need extra material for cuts, breakage, irregular layouts and measurement differences. The appropriate allowance depends on the product and project.