Drywall Calculator

Calculate drywall sheets, joint compound, tape, screws, and corner bead for any room. Choose from 5 drywall types and multiple sheet sizes. Includes a complete shopping list with cost estimates.

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Sheets
18
4x8 sheets
Area
512
sq ft (net)
Materials
$346
all supplies
Total
$1,114
w/ labor
Shopping List
ItemQtyCost
Regular (White) 4x8 1/2"18 sheets$216
Drywall Screws (1-1/4")3 box(es)$30
Joint Compound (4.5 gal bucket)1$18
Paper Tape (250 ft rolls)1$8
Corner Bead (8 ft)8$24
Drywall Primer2 gal$50
Professional Install (hang, tape, finish)$768
Grand Total$1,114
Drywall Type Guide
Regular (White)
$12/sheet
Standard for most rooms
Moisture Resistant (Green)
$15/sheet
Bathrooms, kitchens, laundry
Fire Resistant (Type X)
$14/sheet
Garage, furnace room, code requirement
Soundproof (QuietRock)
$50/sheet
Home theaters, bedrooms, offices
Mold Resistant (Purple)
$18/sheet
Basements, high-humidity areas

How to Use Drywall Calculator

  1. 1Enter room dimensions and ceiling height
  2. 2Subtract doors and windows
  3. 3Choose drywall type and thickness
  4. 4View complete materials shopping list

Frequently Asked Questions

How many sheets of drywall do I need?

Measure total wall and ceiling area in square feet, then divide by sheet size (32 sqft for 4x8, 48 sqft for 4x12). Add 10-15% for waste from cuts and mistakes. A typical 12x12 room with 8-ft ceilings needs about 18 sheets of 4x8 drywall.

How much joint compound do I need?

Plan for approximately 0.05 gallons of joint compound per square foot of drywall. A 5-gallon bucket covers about 100 square feet of finished joints. For a standard room, 1-2 buckets is typical.

What thickness drywall should I use?

1/2-inch is standard for walls. 5/8-inch is required for ceilings (sag-resistant) and fire-rated walls (Type X). 1/4-inch is used for curved walls. Moisture-resistant (green board) is used in bathrooms and kitchens.

About Drywall Calculator

Calculate drywall sheets, joint compound, tape, screws, and corner bead for any room. Choose from 5 drywall types and multiple sheet sizes. Includes a complete shopping list with cost estimates.

NexTool's Drywall Calculator is completely free to use with no sign-up required. Your data is processed directly in your browser and never sent to our servers, ensuring complete privacy and instant results.

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