Ceiling paint calculator
Keep ceiling paint separate from wall colours and round its purchase correctly. Enter your measurements, adjust the assumptions, and leave with a shopping plan.
Buy with confidence.Transparent formulas. Your prices.
Saved on your device.
A separate plan for the ceiling
Use length × width for a flat ceiling. For a sloped ceiling, measure its actual surface rather than the room footprint. Keep ceilings in their own paint group when product or sheen differs.
Already know the net area? Use the paint coverage calculator to work from area or from paint you already have.
A worked example
A 12 × 10 ft ceiling has 120 sq ft. Two coats at 350 sq ft/gal with 10% extra need 0.7543 US gallons. Buy one gallon for this paint group.
Check before checkout
Coverage varies by product and surface. Use the label value, confirm coats and check the suggested container sizes are sold in your chosen finish. Do not combine different colours just to reduce rounding.
Questions worth answering before you paint
Does this include doors and trim?
Doors and windows are deducted as openings. To paint doors or trim, add a custom-area surface with its measured paintable area and a separate paint group. Include all faces you intend to paint.
Can I save without creating an account?
Yes. Save on this device stores one project locally. Download project keeps a portable file. Neither creates an online account.
Is this a guaranteed quote?
No. It estimates quantities and a budget from your inputs. Product performance, preparation and local prices can change the outcome.