About Home Paint Calculator
Home Paint Calculator helps homeowners and pros estimate paint needs quickly and accurately using standard coverage formulas.
~30 sec
Typical time to a gallon estimate
375 sq ft
Default coverage (eggshell/satin)
2 coats
Standard assumption for solid coverage
We focus on paint quantity — how many gallons you need — with clear room-size answers, a simple calculator, and a full multi-room planner. Coverage rates match common manufacturer guidance so your shopping list is realistic before you buy.
Start with a room guide, open the quick calculator, or plan a whole house in the full calculator.
Trusted by millions of homeowners
"Saved me from buying 3 extra gallons of paint! The calculator was spot-on and super easy to use. Wish I'd found this before my last project."
"I use this for quick estimates with clients. It's accurate and I love that I can send them the link. Way better than explaining math on the phone."
"Finally, a paint calculator that actually works! No ads, no signup, just instant answers. Saved me $180 on my bedroom project."