Drywall Sheet Estimator — Quick & Accurate Online Calculator & Guide

Calculate how many sheets of drywall you need for walls and ceiling. Includes screw count, joint compound, tape estimates, and accounts for doors.

✓ Formula verified: May 2026

Drywall Calculator

Results below

Enter Values

Room Length*Length of the room in feet. Measure wall-to-wall along the longest dimension.

Room Width*Width of the room in feet. Measure wall-to-wall along the shorter dimension.

Ceiling Height*Height from finished floor to ceiling in feet. Standard residential is 8 or 9 ft.

Drywall Sheet Size4x8 ft (32 sq ft) is standard and easiest to handle solo. 4x12 ft (48 sq ft) reduces seams on tall walls but requires two people to hang.

Include Ceiling?Include ceiling drywall. Ceiling sheets are hung perpendicular to joists. Use 5/8-inch type X for garage ceilings.

Number of DoorsStandard interior door rough opening is approximately 20 sq ft. Enter the count of door openings.

Number of WindowsStandard window rough opening is approximately 15 sq ft. Enter the count of window openings.

Drywall Sheets Needed

23 sheets

Net Area (with 10% waste)

711 sq ft

Wall Area

504 sq ft

Ceiling Area

192 sq ft

Drywall Screws (approx)

736 screws

Joint Compound

4.5 gallons

Joint Tape

4 rolls (250 ft each)

What if your room length changes? 14.4 ft → 21 sheets · 16 ft → 23 sheets · 17.6 ft → 24 sheets

Scenario Comparison

Conservative (5%)

$16,470.09

$6,470.09 interest

Your scenario (7%)

$20,096.61

$10,096.61 interest

Aggressive (10%)

$27,070.41

$17,070.41 interest

High-risk (14%)

$40,224.71

$30,224.71 interest

Best return

Share your result

Continue with

Paint Calculator Sq Footage Board Foot Calculator

Drywall Estimate

Sheets Needed

23 sheets

Wall Area

504 sq ft

Ceiling Area

192 sq ft

Net Area (w/waste)

711 sq ft

Related Calculators

Reviews

No reviews yet. Be the first to share your experience with Drywall Sheet Estimator — Quick & Accurate Online Calculator & Guide.

Write a Review