Drywall Calculator

Estimate how many drywall sheets you need and what they cost.

Reviewed Oct 22, 20261 cited source (BEA, manufacturer specs and NIST)How we calculate

Adjust prices for your state or ZIP (optional)
Know your local prices? Enter them here (optional)

Your state, ZIP and prices are saved only in this browser on this device. Your ZIP never leaves your browser. We don't use store data; the adjustment is a state-level approximation from public U.S. Bureau of Economic Analysis (BEA) data, not a local quote.

Slider runs 0 sq ft to 3000 sq ft; type any amount in the box.

Extra material for cuts, breakage and mistakes. Our rule of thumb, not from a published standard; adjust to taste.
Example price only, not checked against a published source; enter what your store charges.
Results update as you type.

Sheets to buy

18 sheets

Area per sheet
32 sq ft
Estimated sheet cost
$270.00

Rough estimate, not a guarantee. Actual costs vary by supplier, location and project.

Estimate only. Not 100% accurate or guaranteed. Rough estimate, not a guarantee and not financial advice. Actual costs vary by supplier, location and project. Check local prices, product labels and your own measurements before you buy, and get quotes or check with a qualified pro for structural, electrical or permitted work.

Material quantities and prices are rough estimates, not a guarantee and not financial advice. Check product labels, local codes and your own measurements before you buy.

How it works

Sheet cost only. Screws, tape and joint compound are extra.

The formula

  • Sheets = ⌈area × (1 + extra %) ÷ (sheet width × length)⌉
  • Cost = sheets × price per sheet

How to use this calculator

  1. Add up wall and ceiling area.
  2. Pick your sheet size.
  3. Enter your price per sheet.

Frequently asked questions

4×8 or 4×12?

Longer sheets mean fewer seams but are heavier to handle.

Sources

  1. BEA: Regional Price Parities by State and Metro Area: state goods price levels used for the optional regional adjustment (checked Oct 22, 2026)

Sources last checked Oct 22, 2026Written and reviewed by the Project Cost Math team against the sources above.How we calculate

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