12 × 12 ft room: the short answer
With an 8 ft ceiling, a 12 × 12 ft room has about 528 sq ft of drywall including the ceiling — roughly 19 sheets of 4×8 at 10% waste, or 14 sheets for walls only.
Room size
Drywall for a 12 × 12 ft room
A 12 × 12 ft room with an 8 ft ceiling has about 528 sq ft of drywall (walls + ceiling) — roughly 19 sheets of 4×8 with 10% waste, or 14 sheets for walls only. Adjust height, openings, sheet size, or waste below.
Sheets needed
—Enter a room size to estimate sheets.
| Drywall area | — |
|---|---|
| Sheets (incl. waste) | — |
| Joint compound | — |
| Joint tape | — |
| Screws (approx.) | — |
| Estimated sheet cost | — |
Shopping list
Run the calculator to prepare a list.
Estimate only.
Sheets include your waste allowance. Compound, tape, and screws use common coverage
rules (≈1 box of mud per 475 sq ft, ≈400 ft of tape per 1,000 sq ft, ≈32 screws per sheet) —
confirm against product labels and your stud spacing.
Don't forget the finishing
Beyond the sheets you'll need about 2 boxes of joint compound, ~212 ft of tape, and ~608 screws. Subtract big openings in the calculator, and bump the waste allowance for rooms with lots of cuts.
Standard area math at an 8 ft ceiling + common coverage rules. Estimates only.
What a 12 × 12 ft room needs
A 12 × 12 ft room is a square bedroom, den, or office. At an 8 ft ceiling it needs about 48 sheets of 4×8 drywall including the ceiling, and the square layout gives simple wall runs with fewer corner complications than long narrow rooms.
How to decide
Because all four walls are the same length, sheet layout repeats cleanly and waste is easier to control. Decide whether to hang the ceiling first and how many people will handle the lifts; 4×8 sheets are manageable for two people. The calculator includes ceiling and 10% waste, so confirm the exact wall height before ordering.
Checks before you order
- Confirm wall height; the 8 ft assumption changes if ceilings are 9 or 10 ft.
- Hang ceiling before walls to keep the seams and finishing sequence simple.
- Verify corner and opening details that change sheet counts at the edges.
FAQ
How many sheets of drywall for a 12 × 12 ft room?
With an 8 ft ceiling, a 12 × 12 ft room is about 528 sq ft including the ceiling — roughly 19 sheets of 4×8 at 10% waste. For walls only it's about 14 sheets. Subtract doors and windows in the calculator for a tighter number.
How much joint compound and tape for a 12 × 12 ft room?
For about 528 sq ft, plan on roughly 2 boxes of ready-mix joint compound (4.5 gal) and about 212 ft of joint tape, using common coverage rules. Buy a little extra for the first-coat learning curve.
How many screws for a 12 × 12 ft room?
At about 32 screws per sheet, roughly 608 drywall screws for the 19 sheets. Ceilings and 12-inch screw spacing use more; 16-inch field spacing uses fewer.
Sources & verification
Source links and page assumptions reviewed .
- USG: drywall systems and finishing — Manufacturer guidance for drywall panel selection, joint treatment, and finishing.
Estimate only, based on standard area math at an 8 ft ceiling and common coverage rules. Sheet counts include the 10% waste allowance and are rounded up; finishing figures are starting estimates. Confirm against product labels and your framing before buying.