Drywall Calculator

Estimate drywall sheets, screws, tape, compound, and cost.

Measurement guide

Measure wall perimeter and height, subtract large openings, and confirm sheet size and orientation.

Record each area separately, keep units consistent, and update the estimate with a final site measurement before ordering.

Assumptions and limitations

Area-based counts do not create a joint layout. Ceilings, double layers, fire ratings, offcuts, framing spacing, and specialty boards need separate review.

Prices, tax, and delivery are user-entered planning figures, not supplier quotations.

Worked example

A 12 × 10 ft room with 8 ft walls and 40 sq ft openings has 312 sq ft net wall area; 10% waste needs about eleven 32-ft² sheets.

Frequently asked questions

What waste allowance should I use?

Simple rectangles often start at 5–10%; complex patterns, many cuts, or fragile material justify more based on the installation plan.

Why is the purchase quantity rounded up?

Packages and whole pieces usually cannot be bought fractionally, so purchasing rounds up while the exact quantity remains visible.

Can I order directly from this result?

Not without verification. Re-measure, check the product label, batch and stock, and confirm with the supplier or a qualified professional.

What does the cost estimate include?

Material cost uses the rounded purchase quantity, then adds entered labor, delivery, and tax; unlisted accessories are excluded.