Construction

Drywall Calculator

Calculate drywall sheets and screws from your total wall/ceiling area.

Surface area

Sheet size

Waste (%)

Price per sheet ($)

Calculated Output

Sheets needed (sheets) 18

Screws (approx.) (screws) 576

Total cost ($) 0

Formula: sheets = area ÷ sheet size × (1 + waste)

Step-by-Step Breakdown

1. Values used:

2. Surface area = 500

3. Sheet size = 32

4. Waste = 10 %

5. Price per sheet = 0 $

7. Sheets needed = 18sheets

8. Screws (approx.) = 576screws

9. Total cost = 0$

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The math behind it

Sheets = total area ÷ sheet area, rounded up, plus waste for cuts around doors/windows.

Screw estimate uses ~32 screws per sheet (16 in spacing on studs/joists).

500 ft² with 4×8 ft sheets and 10% waste → 500 ÷ 32 × 1.10 = 18 sheets (≈576 screws).

How far apart should drywall screws be?

About 16 in on walls and 12 in on ceilings, along each framing member.