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Drywall Calculator

Construction
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Calculates the number of drywall panels needed for a room, considering wall and ceiling dimensions.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Wall Length (feet), Wall Height (feet), Room Width (feet), Room Length (feet), Drywall Sheet Width (feet), Drywall Sheet Length (feet), Door Width (feet), Door Height (feet), Window Width (feet), and Window Height (feet) in the units shown.

Step 2

Read Drywall Sheet Area (sq ft), Ceiling Area (sq ft), Window Area (sq ft), Door Area (sq ft), Total Wall Area (sq ft), Ceiling Sheets Required, Net Wall Area (sq ft), Wall Sheets Required, and Total Sheets Required in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Small Room

Wall Length (feet): 10 ft; Wall Height (feet): 8 ft; Room Width (feet): 10 ft; Room Length (feet): 10 ft; Drywall Sheet Width (feet): 4 ft; Drywall Sheet Length (feet): 8 ft; Door Width (feet): 3 ft; Door Height (feet): 7 ft; Window Width (feet): 4 ft; Window Height (feet): 4 ft

Drywall Sheet Area (sq ft): 32 sq ft; Ceiling Area (sq ft): 100 sq ft; Window Area (sq ft): 16 sq ft; Door Area (sq ft): 21 sq ft; Total Wall Area (sq ft): 320 sq ft; Ceiling Sheets Required: 4 sheets; Net Wall Area (sq ft): 283 sq ft; Wall Sheets Required: 9 sheets; Total Sheets Required: 13 sheets

Medium Room

Wall Length (feet): 12 ft; Wall Height (feet): 8 ft; Room Width (feet): 14 ft; Room Length (feet): 14 ft; Drywall Sheet Width (feet): 4 ft; Drywall Sheet Length (feet): 8 ft; Door Width (feet): 3 ft; Door Height (feet): 7 ft; Window Width (feet): 4 ft; Window Height (feet): 4 ft

Drywall Sheet Area (sq ft): 32 sq ft; Ceiling Area (sq ft): 196 sq ft; Window Area (sq ft): 16 sq ft; Door Area (sq ft): 21 sq ft; Total Wall Area (sq ft): 416 sq ft; Ceiling Sheets Required: 7 sheets; Net Wall Area (sq ft): 379 sq ft; Wall Sheets Required: 12 sheets; Total Sheets Required: 19 sheets

Large Room

Wall Length (feet): 16 ft; Wall Height (feet): 9 ft; Room Width (feet): 18 ft; Room Length (feet): 18 ft; Drywall Sheet Width (feet): 4 ft; Drywall Sheet Length (feet): 8 ft; Door Width (feet): 3 ft; Door Height (feet): 7 ft; Window Width (feet): 6 ft; Window Height (feet): 4 ft

Drywall Sheet Area (sq ft): 32 sq ft; Ceiling Area (sq ft): 324 sq ft; Window Area (sq ft): 24 sq ft; Door Area (sq ft): 21 sq ft; Total Wall Area (sq ft): 612 sq ft; Ceiling Sheets Required: 11 sheets; Net Wall Area (sq ft): 567 sq ft; Wall Sheets Required: 18 sheets; Total Sheets Required: 29 sheets

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