Drywall Calculator

Sheets, optional screws, and rough cost.

Drywall / Plasterboard / Gyprock Calculator

Estimate how many wall sheets to buy from wall size, sheet size, wall count, waste allowance, and simple layout orientation. Optional opening deductions and screw-pack fields add extra guidance without blocking the core sheet answer.

Drywall Inputs

Measurement systemSystem

Layout orientationLayout

Wall length / height unit

Sheet size unit

Stud / screw spacing unit

Opening deduction area unit

Wall lengthWall length

Wall heightWall height

Number of matching wallsWall count

Sheet lengthSheet length

Sheet widthSheet width

Combined opening deduction areaOpening area

Waste allowance (%)Waste %

Optional screws and price fields

Stud spacing

Screw spacing

Price per sheet

Screws per pack

Price per screw pack

Tape, compound, and ceiling workflows remain later-phase enhancements. This page focuses on the core wall-sheet planning loop.

The calculator compares a simple area-based count and a simple layout-based count, then uses the higher practical value before waste is applied.

Drywall calculator FAQ

Why does layout orientation matter?
Orientation changes which sheet dimension spans the wall height versus the wall length, which changes the layout-based sheet count.

Can I deduct doors and windows separately?
This static batch uses one optional combined opening area field to stay simple and avoid misleading default assumptions.

Need generic sheet counting? Painting after lining? Back to calculator home