Paint Calculator
Calculate gallons of paint needed for walls, ceiling, and trim in any room
Room Dimensions
Paint Options
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Enter room dimensions to see how many gallons you need
Tips & Notes
- •One gallon covers roughly 350–400 sq ft of smooth walls; 300 sq ft for textured.
- •Always prime new drywall or when making a dramatic color change.
- •Satin or eggshell finish is most practical for walls — easier to clean than flat.
- •Ceilings typically need flat/matte finish paint; most brands have a dedicated ceiling formula.
- •Buy 10% extra — it's nearly impossible to match a batch later if you run short.
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