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Drywall Calculator
Estimate drywall sheet count from room dimensions, openings, ceiling area, sheet size, waste allowance, and optional sheet price.
DRYWALL
LOCAL
NO DATA SENT
DRYWALL CALCULATORSHEETS / WALLS / CEILING / WASTE
ROOMENTER ROOM AND SHEET SIZE
Subtract known door/window area, choose whether the ceiling is being boarded, then add an ordering allowance for cuts and mistakes.
WALL AREA—
CEILING AREA—
NET AREA—
WITH WASTE—
EST. SHEET COST—
HOW IT WORKSAREA ÷ SHEET COVERAGE
READYEnter room dimensions and sheet size.
LOCAL TOOL: Project measurements stay in your browser. Sheet layout, framing, seams, specialty board, fire/moisture ratings, local requirements, and installer practices can change the real quantity needed.
FIELD NOTE / 078
Drywall quantity starts with wall and ceiling area.
Wall area for a rectangular room is 2 × (length + width) × wall height. Subtract openings, optionally add the ceiling, add a waste allowance, then divide by the square-foot coverage of one sheet and round up.