Room Paint Calculator
Enter your room dimensions to instantly see how many gallons you need — plus material and labor cost estimates.
Room Dimensions
Openings (subtract from wall area)
21 sq ft deducted per door
15 sq ft deducted per window
Paint Options
Assumes smooth walls with standard primer. Coverage varies by surface texture and color change. Textured walls or dark-to-light color changes may require 20–30% more paint. Labor estimate based on $2.50/sq ft — actual rates vary by scope and Phoenix Metro location.
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Let our licensed Phoenix painters give you an accurate written estimate. We handle prep, painting, and cleanup — and we'll beat any comparable quote.
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About This Calculator
How It Works
We calculate your paintable wall area by measuring the room perimeter × ceiling height, then deducting 21 sq ft per door and 15 sq ft per window. That net area divided by the gallon coverage rate gives you gallons per coat.
Arizona Considerations
Phoenix stucco interiors often need an extra coat when switching from dark to light colors. For drywall repairs or raw-patch spots, budget a primer coat first — it cuts total paint consumption and improves final coverage.
Which Finish to Choose
Flat/Matte: ceilings, master bedrooms, low-traffic walls.
Eggshell: living rooms, dining rooms — the workhorse finish.
Satin: kitchens, kids' rooms, high-touch areas.
Semi-Gloss: trim, doors, bathrooms.
Professional vs. DIY
Our labor estimate of $2.50/sq ft covers a typical Phoenix interior including prep, masking, two coats, and cleanup. Actual quotes depend on ceiling height, wall condition, access, and color complexity.