Free OnlineCalculators & Converters
Drywall Calculator
Calculate drywall sheets, joint compound, tape, and screws for any room or multiple rooms.
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Key Features — Drywall Calculator
Multi-room support
Wall and ceiling area
Door/window deductions
Mud, tape, and screw estimates
Why Use This Tool — Drywall Calculator
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Use on any device — desktop, tablet, or phone. No downloads or plugins needed.
Frequently Asked Questions — Drywall Calculator
How many drywall sheets do I need?
Total area minus openings plus 10% waste, divided by sheet area (32 sq ft for 4×8).
How much joint compound do I need?
About 1 bucket (5 gal) per 600–800 sq ft of drywall, accounting for 3 coats.
What size drywall sheet?
4×8 easiest to handle. Use 4×9 for 9-ft ceilings; 4×10 for 10-ft ceilings.