Ceiling Paint Calculator
Ceiling paint calculator for estimating total ceiling area and gallons needed using room size, coats, coverage per gallon, and waste.
Inputs
Tip: Higher ceilings, textured surfaces, or roller loss can increase waste. Check your paint label for coverage guidance.
Results
Total ceiling area
120 sq ft
264 sq ft adjusted for coats and waste
Gallons needed
0.75
Assumptions
- Coverage per gallon assumes smooth ceilings; textured surfaces may need more paint.
- Waste accounts for roller loss, touch-ups, and overlap.
- Total area does not subtract skylights or openings unless you adjust inputs.
Example
A 12 ft by 10 ft ceiling across 1 room(s) with 2 coats and 10% waste needs about 0.75 gallons of paint when coverage is 350 sq ft per gallon.