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Tool: Drywall Calculator (Sheets, Materials & Cost) | Printed on:
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Drywall Calculator (Sheets, Materials & Cost)
Estimate drywall sheets, joint compound, paper tape, and screws for walls and ceilings.
AI Generated Visual
MATERIAL ESTIMATION
More in Interior Finishes & Flooring:
Project Specifications
Drywall Sheet Formula
Transparent mathematical methodology explained in plain English.
Sheets = ⌈ Total Wall & Ceiling Sq Ft / Sheet Sq Ft × (1 + Waste %) ⌉ 4×8 sheet = 32 sq ft | 4×10 sheet = 40 sq ft | 4×12 sheet = 48 sq ft. Add 10% waste for cutoffs.
Variables Explained:
- Joint Compound: Approx 5 gallons (1 bucket) of premixed compound per 1,000 sq ft.
Real Project Example
Basement Room: 16 ft × 12 ft with 8 ft Ceiling
Complete drywall hanging estimate.
Sample Project Inputs:
Dimensions: 16 × 12 × 8 ft high
Ceiling: Included
Sheet Size: 4×8 (32 sq ft)
Step-by-Step Calculation:
- Wall gross area: 2 × (16 + 12) × 8 = 448 sq ft.
- Ceiling area: 16 × 12 = 192 sq ft.
- Total area: 448 + 192 = 640 sq ft.
- Deduct 1 door (21 sq ft) = 619 sq ft.
- Add 10% waste: 619 × 1.10 = 680.9 sq ft.
- 4x8 sheets needed: 680.9 ÷ 32 = 21.28 -> Buy 22 sheets.
- Joint compound: 640 sq ft ÷ 1000 × 5 gal = 3.2 gallons (One 4.5-gal bucket).
Calculated Answer: Order 22 sheets of 4×8 drywall, 1 bucket of joint compound, and 1 roll of tape.
Knowledge Base
Frequently Asked Questions: Drywall Calculator
Click any question below to expand quick answers, formulas, and expert tips.
Should drywall be hung horizontally or vertically?
On residential walls, hanging drywall horizontally reduces the total linear feet of taped joints by up to 25% and places the seam at a comfortable taping height.