Drywall Calculator

Enter your room dimensions to estimate how many drywall sheets you need for walls and ceiling, and compare costs across sheet thicknesses including tape and screws.

Drywall Calculator

Sheet Size

Ceiling

Room Length (ft)

Room Width (ft)

Ceiling Height (ft)

Number of Windows

Number of Doors

Waste Factor (%)

Pricing (edit to match local rates)

1/2" Sheet ($)

5/8" Sheet ($)

1/4" Sheet ($)

Tape Roll ($)

Screw Box ($)

Wall Preview

Hover for area • all 4 walls shown as one strip

Total Area

520 sq ft

473 sq ft net + 10% waste

Sheets Needed

17 sheets

4x8 ft panels (1/2" Standard)

Joint Tape

131 ft

1 roll ($5.00)

Best Value

1/2" Standard

$241.00

Purchase Option	Quantity	Est. Cost
1/2" Standard (4x8) + 1 tape roll + 4 boxes screwsBest value	17 sheets	$241.00
5/8" Fire-Rated (4x8) + 1 tape roll + 4 boxes screws	17 sheets	$292.00
1/4" Flexible (4x8) + 1 tape roll + 4 boxes screws	17 sheets	$275.00

Cheapest option: 1/2" Standard at $241.001/2" drywall is standard for most interior walls and ceilings. Use 5/8" fire-rated drywall for garage walls, ceilings below living spaces, and where code requires it. 1/4" flexible drywall is used for curved surfaces and layering over existing walls.

This is a material estimate only. Actual sheet counts depend on room layout, stud spacing, and cut optimization. Always verify thickness requirements and fire-rating codes with your local building authority.