Project Matter

Drywall / panel estimate

Drywall calculator

Estimate full wallboard sheets for four walls and an optional ceiling, with standard openings and cutting waste.

Project measurements

Room

ft
ft
ft

Openings

Panel & allowance

ft
ft
%
$

Coverage first, panel planning second.

The calculation

Four-wall area is reduced by standard openings. An optional ceiling and your allowance are added before division by sheet area.

Waste stays visible

USG's estimator notes that its panel count excludes waste. This tool exposes a separate allowance so you can match the room and layout. Source

Before you buy

Plan seams before counting sheets.

01

Check panel type

Wet areas, garages, ceilings, and rated assemblies may require different products or thicknesses.

02

Map the orientation

Panel direction and framing spacing determine where seams land and whether offcuts can be reused.

03

Count accessories separately

Screws, joint tape, compound, corner bead, adhesive, and primer are not included in this sheet estimate.