Paint Coverage Calculator
Estimate paintable wall area and gallons needed for a simple room project.
Result
Common questions
How much area does this subtract for doors and windows?
It estimates 21 square feet per door and 15 square feet per window.
Is this exact?
No. Paint coverage varies by surface, product, color change, and application method.
Make the paint coverage calculator useful
How to use this calculator
Enter the requested numbers for the paint coverage calculator. The calculator uses those inputs to produce a clear estimate you can use for planning or comparison.
What the result means
Treat the result as a planning estimate, not a guarantee. Real-world totals can change because of fees, timing, taxes, rounding, usage, price changes, or missing inputs.
Useful next checks
After reviewing the result, compare it with your budget, timeline, other costs, and any related tools that help complete the decision.
Related tools
Estimate how much paint a project may need.
How to use this tool
Enter wall area or room dimensions and coverage assumptions.
What the result means
The result estimates paint quantity, not primer, waste, texture, or extra coats.
Useful next check
Round up for touch-ups and compare can pricing with the unit price calculator.
Related tools
Results are planning estimates for education and comparison only. They are not financial, tax, legal, lending, payroll, construction, or professional advice.