Drywall Sheet Calculator

Calculate the sheets you need for walls and ceilings, then compare common board sizes before you buy.

Room dimensions

Room length ft Room width ft Wall height ft

Optional

Subtract doors, windows, and other areas that will not receive drywall.

Sheet size Sheet thickness Sheet type

Waste / overage allowance % Price per sheet (optional) $

Installation area

Walls only Walls + ceiling

Calculation result

You need

16sheets

4 × 8 ft drywall

Order area 493 sq ft Including 10% waste

Breakdown

Room reference

Compare common sizes

Comparison uses your room area, openings, and waste allowance.