Paint Coverage Calculator
Construction & Home ImprovementCalculate how many gallons of paint you need based on wall area and number of coats.
Gallons Needed
Total gallons of paint needed for this project.
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Construction & Home Improvement calculators
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Construction & Home Improvement calculators
Frequently Asked Questions
How much area does a gallon of paint typically cover?
Most standard paints cover 350-400 square feet per gallon on smooth surfaces, though textured walls, porous surfaces, or darker color changes may reduce coverage — check your specific paint can for its rated coverage.
Should I subtract doors and windows from wall area?
For accurate estimates on larger rooms, yes — subtract door and window areas. For smaller rooms, many painters skip this since the extra paint usually accounts for trim work and touch-ups anyway.
Why do I need 2 coats for most projects?
A single coat often shows roller marks, uneven coverage, or the previous color showing through, especially with significant color changes — two coats is the standard recommendation for a professional, even finish.
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