Paint Calculator
Enter your total wall width and height, the number of coats, and how many doors and windows to subtract, to estimate the paint you need in gallons and litres.
0
gallons of paint (approx)
Paintable area0 sq ft
Litres (approx)0 L
Assumes about 350 sq ft coverage per gallon per coat and 20 sq ft per opening. Buy a little extra for touch-ups.
✉ Email me this result
</> Embed this calculator
Paste this into any website or blog post. It is free — the small "powered by" link must stay visible.
Frequently Asked Questions
What coverage does it assume?
About 350 square feet per gallon per coat, and roughly 20 square feet per door or window subtracted.
Should I buy extra?
Yes, buy a little extra for touch-ups and second coats, especially over dark or porous walls.