Drywall Calculator

Calculate the number of drywall sheets needed for wall or ceiling surfaces, taking waste into account.

✅ Free 📅 Updated 22.9.2026 🏠 Construction Calculator

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About this calculator

What is the Drywall Calculator – sheet quantity for walls and ceilings?

The drywall calculator calculates the required amount of drywall for walls or ceilings based on the room dimensions. The sheet size is 1,200 × 102 in (33.6 sq ft) or 1,200 × 94.5 in (31 sq ft).

The calculator is free, works in the browser, and does not require registration. The site offers over 200 calculators with up-to-date data.

Calculation Principle

Sheet quantity = Area ÷ Sheet area × (1 + waste%)

Fill in your details in the fields and press the calculate button – the result will appear immediately.

Practical Example

Ceiling 4 × 5 m = 20 m². Sheet 2.88 m². 20 ÷ 2.88 = 6.94 → buy 8 sheets (15% waste).

Enter your own details into the calculator to get a personalized result.

Who is the calculator suitable for?

The calculator is suitable for individuals, entrepreneurs, and professionals. All calculators on the site are free of charge.

The result is an estimate or calculated value – for official matters, verify the numbers with official sources or an expert.

Tips

  • Install the sheets vertically – fewer joints and shorter leveling time.
  • Leave a 0.39–0.59 in gap at the floor for moisture rise and movement.
  • Position the joints at the edges of windows to avoid cracks at movement points.


Frequently Asked Questions