Ceiling Area Calculator
Ceiling area = floor area (for flat ceilings).
Result
Paintable ceiling
164.0 ft²
14×12 = 168.0 ft² less 4 for fixtures.
- Floor area168.0 ft²
- Fixtures1 × 4 ft² = 4
- Paintable164.0 ft²
Step-by-step
- Ceiling area = 14 × 12 − 4 = 164.0 ft².
How to use this calculator
- Enter L × W.
- Enter fixture count.
- Read paintable ceiling area.
About this calculator
For flat ceilings, ceiling area equals floor area. Subtract any large fixtures (light fixtures ~4 ft²) you won't be painting around. For vaulted/cathedral ceilings, multiply by pitch factor (use trigonometry for exact).
Frequently asked
Multiply by 1.05-1.41 depending on pitch. Or measure each side (rafter length × room width).
Related calculators
Floor Area Calculator
L × W = floor area in ft². For flooring orders, multiply by 1.10 (10% waste).
Wall Area for Paint Calculator
Perimeter × ceiling height − doors and windows = paintable area.
Interior Paint Quantity Calculator
Gallons needed = wall area × coats / coverage (350 ft²/gal default).
Square Footage Calculator (Rectangular)
Length × width = ft². The simplest area calc.
Drywall Sheet Calculator
Sheets needed = wall area / sheet area (32 ft² for 4×8, 48 ft² for 4×12).
Ceiling Tile Count Calculator
Tiles = ceiling area / tile area, plus grid-feet for the suspended grid.