Paint Coverage Calculator – Gallons Needed for Walls


Paint Coverage Calculator – Gallons Needed for Walls

Paint Coverage Calculator – Gallons Needed for Walls

Wondering how much paint to buy? Enter your walls' total area (or each wall), subtract doors and windows, and get the exact gallons needed per coat — no more wasted paint.

Paintable area—
Paint needed—
Based on 350 sq ft coverage per gallon (average for most interior paints).

This calculator runs entirely in your browser. Your numbers never leave your device.

Popular paint searches

  • How much paint do I need for a 12x12 room
  • How many square feet does a gallon of paint cover
  • Paint calculator for two coats of paint

More free tools are on the way — suggest a tool you'd like to see next.


 

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