Drywall Calculator
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Room length
ft
Room width
ft
Ceiling height
ft
Number of doors
Number of windows
Include ceiling
Yes
Sheet size
4 x 8 ft (32 sq ft) — easier to handle
4 x 12 ft (48 sq ft) — fewer seams
Outside corners (need corner bead)
Room complexity (sets waste factor)
Simple (square room) — 10% waste
Moderate (a few angles) — 15% waste
Complex (vaults, nooks, trays) — 20% waste
You need
Drywall sheets
17 × 4x8 sheets
477.00 sq ft + 10% waste
Joint compound
2 × 4.5 gal buckets
~4.80 gal total
Drywall tape
1 roll (500 ft)
~286 linear ft needed
Drywall screws
3 × 1 lb boxes
~612 screws total
Corner bead
2 × 8 ft pieces
2 outside corners
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