How to use the drywall calculator
- Wall and ceiling area (sq ft): Net surface area to cover.
- Sheet length (ft): Nominal sheet length.
- Sheet width (ft): Nominal sheet width.
- Waste allowance (%): Extra sheets for cuts and breakage.
- Select the button and review the result.
Worked example
A 4 × 8 sheet covers 32 sq ft before waste.
Method and limitations
Area ÷ sheet area × waste allowance.
Does not estimate framing, fasteners, joint compound, fire ratings, or local code requirements.
Common questions
Why might another result be different?
Inputs, rounding, policies, rates, and assumptions can differ. Compare like-for-like values and use current official information when a rate or rule can change.
Does NidXee save my entries?
No. The calculation runs in your browser. Reloading or closing the page may clear it.