Get precise measurements for drywall sheets, screws, and materials for your room. Our free drywall calculator helps you plan your project accurately and avoid waste.
Total Area
472.0 sq ft
Walls: 352.0 sq ft, Ceiling: 120.0 sq ft
Sheets Needed
15 sheets
Estimated Cost
$180.00
Always buy 5-10% extra for cuts, waste, and mistakes. It's better to return unopened sheets than to run out mid-project.
Drywall estimates usually start with the project area or volume, then add a waste factor before converting the result into bags, pieces, bundles, panels, or gallons. Use this calculator when you need a fast material estimate before ordering supplies, comparing costs, or planning a construction project.
Contractors, builders, remodelers, and DIY homeowners who need a practical jobsite estimate.
Start with the dimensions of the project, then choose material settings, price, and waste percentage.
The basic workflow is to measure room, choose sheet size, calculate sheets, then round up so you do not run short during installation.
For walls, 1/2 inch is standard. For ceilings, 1/2 or 5/8 inch (5/8 inch is better for sag resistance). For bathrooms, use moisture-resistant (green board).
Calculate drywall sheets by dividing total area by 32 (4×8 sheet) or 48 (4×12 sheet). Add 5-10% for waste.
Measure length, width, and height of the room. Calculate ceiling and wall areas separately.
Decide between 4×8 or 4×12 sheets. Larger sheets mean fewer seams but are heavier.
Divide total area by sheet area (32 or 48 sq ft). Round up to whole sheets.
Plan for about 1 screw per square foot, or roughly 1.5-2 lbs of screws per sheet.
One 5-gallon bucket of joint compound covers about 12-15 sheets.
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