Paint Calculator
Calculate how much paint you need for your room.
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Wall Area
Paintable Area
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Frequently Asked Questions
How much area does a gallon of paint cover?
One gallon covers approximately 350 square feet in one coat on smooth surfaces.
How many coats do I need?
Two coats is standard. Use three for dramatic color changes or going from dark to light.
How much do I deduct for doors and windows?
Standard door: ~21 sq ft. Standard window: ~15 sq ft. Subtract these from total wall area.
Should I buy extra paint?
Yes, buy 10-15% extra for touch-ups, waste, and future repairs. Keep leftovers for touch-ups.
Does paint type affect coverage?
Yes, primer covers less (~200 sq ft/gal). Textured walls need 20% more paint. High-quality paint often covers better.