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

Optional screws and price fields
Use this page for a simple wall-sheet estimate. Estimate tape, compound, and ceiling materials separately.
The calculator compares a simple area-based count and a simple layout-based count, then uses the higher practical value before waste is applied.

Wall sheets: area method versus layout method

This calculator supports walls only. It checks the net wall area after opening deductions and also checks a simple sheet layout based on the selected orientation. The larger count is used before allowance because a real wall must be covered by whole sheets, not just equivalent area.

Drywall calculation

area count = net wall area ÷ sheet arealayout count = rows × sheets per row; use the higher count, then add waste

Orientation is a planning choice

Vertical and horizontal sheets place the long dimension differently. Try both where the product system permits it, then choose with joint position, handling, and product instructions in mind. The page does not estimate ceilings, tape, compound, or a staggered-joint layout.

Why the higher result can be right

A wall may have 15.2 sheet-areas but need 18 whole sheets by rows and cuts. The difference is not extra “padding”; it is an explanation of why surface area is not always a purchasable layout.

Sheet and wall planning