About Paint Calculator

Paint Calculator helps homeowners and DIYers estimate how much paint to buy before heading to the store. Enter room dimensions and ceiling height, choose walls or ceiling, add coats and waste, and get gallon counts rounded up so you do not run short mid-project.

The calculator runs entirely in your browser — no account, no uploads, no sales calls. Copy the shopping list and take it with you.

Questions or feedback? Get in touch or email [email protected].