Formula and Assumptions
Gallons = wall area x coats / coverage per gallon, rounded up.
Actual conditions, local rates, product labels, and contractor recommendations can change the final quantity or cost.
Example Calculation
A 400 sq ft wall area with two coats and 350 sq ft per gallon needs 3 gallons.
Tips
- Check the paint label for real coverage.
- Use primer for major color changes.
- Round up for touch-ups.
FAQ
How accurate is this paint estimate?
It is a planning estimate. Product coverage, texture, color change, and application method can change real usage.
Should I buy extra paint?
Yes, rounding up helps cover touch-ups and small mistakes.
Does this include primer?
No. Add primer separately when needed.
Can I use it for exterior paint?
It can provide a rough estimate, but exterior surfaces often need more allowance.