How much drywall do you need for a 12×14 room?

A 12×14 ft room with 8 ft walls needs 19 sheets of 4×8 drywall for the walls and ceiling (one door, one window, 10% waste), or 13 sheets of 4×12. Walls alone take 14 sheets of 4×8.

Change the numbers

The calculator below is pre-filled for this project. Adjust any value — including feet and inches — and the results update instantly.

Your results

Drywall sheets19

Total area to cover548 sq ft

Walls / ceiling380 / 168 sq ft

Drywall screws (≈1 per sq ft)608

How much drywall do you need for a 12×14 room — diagram

Drywall sheets for a 12×14 room by wall height

Walls plus ceiling, one door and one window subtracted, 10% waste.

Wall height	Area to cover	4×8 sheets	4×12 sheets
8 ft	548 sq ft	19	13
9 ft	600 sq ft	21	14
10 ft	652 sq ft	23	15

Breakdown

Walls: 380 sq ft after openings
Ceiling: 168 sq ft — consider 4×12 sheets or a drywall lift for the ceiling
Screws: about 608 (≈1 per sq ft of board)

The math

Walls 2 × (12 + 14) × 8 − 21 − 15 = 380 sq ft Ceiling 12 × 14 = 168 sq ft (380 + 168) × 1.10 ÷ 32 = 19 sheets (rounded up)

Common questions

How many sheets of drywall for a 12x14 room?

19 sheets of 4×8 for walls and ceiling with 8 ft walls, or 14 sheets for the walls only.

How many 4x12 drywall sheets for a 12x14 room?

13 sheets for walls and ceiling with 8 ft walls and 10% waste.

Want the full method, tips and other sizes? See the drywall calculator guide.

Last reviewed November 1, 2026. Results are estimates — confirm with your supplier.

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