Estimate Sheetrock panels, screws, tape, and joint compound from room dimensions—matching Inch Calculator.
Room dimensions
Doors, windows, and other areas where you will not hang drywall.
Drywall details
Inch Calculator suggests ~10% extra for cuts and broken pieces.
Drywall material estimate
Enter a price per sheet to estimate material cost.
Other materials
Lightweight mud ≈ 0.053 lb/sq ft; quick-set ≈ 0.073 lb/sq ft. Tape covers about 2–3 sq ft per foot. Always confirm coverage on your product label.
Formula
How it works
Examples
About this calculator
The Drywall Calculator estimates Sheetrock panels, screws, joint tape, and mud for a rectangular room. It follows Inch Calculator’s approach: wall area from width, length, and height, optional ceiling coverage, common panel sizes, and accessory rates for finishing supplies.
Room walls and optional ceiling
Enter width, length, and height in in/ft/yd/cm/m. Toggle the ceiling on when you are hanging drywall overhead, and subtract door/window openings for a tighter count.
Standard panel sizes
Choose 4′ × 8′, 4′ × 9′, 4′ × 10′, or 4′ × 12′ sheets. A 10% waste allowance helps cover cuts and broken panels.
Screws, tape, and mud
See screw count, tape length, ready-mix gallons, plus lightweight and quick-setting compound pounds based on published coverage rates.
- Room renovations
- New construction hang lists
- DIY Sheetrock orders
- Mud & tape planning
Frequently asked questions
Quick answers about this calculator—how it works, accuracy, and everyday use.
Measure the room’s width, length, and height. Wall area is 2 × (length + width) × height. Add length × width if you include the ceiling, subtract door and window openings, then divide by the sheet size (for example 32 sq ft for 4′ × 8′ panels). Round up and add about 10% for cuts and waste.
For a 10′ × 10′ room with a 9′ ceiling, walls plus ceiling total 460 sq ft. That is 15 sheets of 4′ × 8′ drywall before openings and waste—matching the Inch Calculator FAQ example.
Yes in everyday use. Sheetrock is a brand name for drywall, much like Kleenex for tissues. Panels also come in 4′ × 9′, 4′ × 10′, and 4′ × 12′ sizes and thicknesses such as 1/4″, 1/2″, and 5/8″.
Tape covers about 2–3 sq ft of drywall per linear foot. Lightweight (non-premixed) mud is about 0.053 lb per sq ft; quick-setting mix is about 0.073 lb per sq ft. Ready-mix is often estimated near 1 gallon per 100 sq ft—always check your product’s label.