Drywall Calculator
Estimate drywall sheets for walls and ceilings plus the finishing materials: joint tape, compound and screws. Sheet size and waste allowance are configurable.
Drywall Calculator
Paint & Wall
ft²
ft²
ft
ft
%
Drywall sheets
158×4 ft sheets
Joint tape
323 ft · 98 m
Joint compound
56 lb · 25.4 kg
≈ one 4.5 gal box covers ~470 ft²
Screws
538 screws
≈ 1.8 lb (1¼" coarse, 300/lb)
Total area
430 ft² · 39.9 m²
Calculation breakdown
- 1Areas:
walls 39.9 + ceiling 0 = 39.9 m² - 2Sheet area:
32 ft² per sheet - 3With waste:
430 ft² × 1.10 = 473 ft² - 4Sheets:
⌈473 ÷ 32⌉ = 15
- Moisture-resistant (green) board for bathrooms; fire-rated (type X) where code requires.
Total area = Wall area + Ceiling area.
Sheets = ⌈Total area × (1 + Waste) ÷ Sheet area⌉.
Finishing estimates (industry planning ratios): tape ≈ 0.75 ft/ft² · compound ≈ 0.13 lb/ft² · screws ≈ 1.25 screws/ft² (≈300 screws/lb).