Paint Calculator - Calculate Paint Needed
Calculate paint needed for walls, ceilings, or trim. Free calculator estimates gallons needed.
Paint Calculator: Calculate paint gallons needed for your project.
Paint Required
Gallons Needed
3
gallons of paint
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Paint Coverage
One gallon covers 350-400 sq ft per coat. Calculate wall area, divide by 350, multiply by coats (usually 2). Round up to nearest gallon.
Frequently Asked Questions
How much paint needed?
Calculate area, divide by 350 sq ft/gallon, multiply by 2 coats. 500 sq ft = 3 gallons total.
Gallon paint coverage?
350-400 sq ft per coat smooth surfaces, 250-350 sq ft textured. Check manufacturer specs.
How many coats paint?
Most surfaces need 2 coats. Primer + 1 works sometimes. Dark over light may need 3.
Need primer?
Use for new drywall, color changes, stained surfaces, glossy surfaces. Improves adhesion.
Paint for 12x12 room?
12×12 with 8 ft ceilings = 528 sq ft. Need 4-5 gallons for walls and ceiling with 2 coats.
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