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Paint Calculator — How Many Gallons Do I Need?
Calculate exactly how many gallons of paint you need for any room. Accounts for doors, windows, number of coats, and ceilings.
Paint Needed
3 gal
For walls (all rooms)
489 sq ft
Total Wall Area
1 gal
Ceiling Paint
4 gal
Total Gallons
$160
Est. Paint Cost
Buy 3 gallons for walls + 1 gallons for ceilings = 4 total. Always buy 10% extra for touch-ups.