Drywall Calculator

Drywall is priced and sold by the sheet, so the estimate that matters is a whole number of sheets, not an area. The conversion from area to sheets depends on the sheet size you choose: a standard four-by-eight sheet covers thirty-two square feet, while a twelve-foot sheet covers forty-eight and means fewer joints to tape. Larger sheets are heavier and harder to handle alone, which is a real cost on a one-person job. Waste is unavoidable because sheets come in fixed sizes and rooms are not multiples of them. Cuts around doors, windows, corners and ceiling lines leave offcuts that rarely fit anywhere else. Ten per cent is a reasonable allowance for a simple square room; fifteen or twenty per cent is safer where there are many openings, angled walls or a ceiling to line as well as the walls. The sheet count also drives the consumables, which are easy to forget until you run out mid-job. Screws are typically fixed about every twelve inches along studs, which works out at roughly thirty-two per sheet, and joint compound for taping and finishing runs to several pounds per sheet depending on the finish level you are chasing. Buying these up front avoids an extra trip. This calculator converts your area into sheets for the size you select, adds a waste allowance, and estimates screws and compound. It assumes standard stud spacing and a straightforward layout, and it does not allow for special boards such as moisture- or fire-resistant types. Use it to build a shopping list, then confirm quantities with your supplier.

This calculator returns estimates for planning and general information only. It is not engineering, architectural, structural, electrical or code advice, and it cannot replace a qualified professional who has seen the site. Material quantities depend on the actual dimensions, the product you buy and local building codes, so confirm the figures before ordering materials or starting work, and always follow local regulations.