About Paint Calculator
A free tool for working out how much paint to buy.
Paint Calculator is a free website that helps you work out how much paint to buy for a room. You enter your measurements and it shows the amount, and the math behind it.
How we build the calculators
Every calculator shows its steps and lists its assumptions, so you can check the numbers or change them. The formulas and default values are explained on the methodology page, with links to the sources they come from.
Who runs this site
Paint Calculator is run by [YOUR NAME].
Independence and advertising
We are not affiliated with any paint maker or store. The site may show advertising to cover its costs. Ads never change the results the calculator gives.
Corrections
If a number looks wrong or a guide is out of date, tell us at YOUR-EMAIL@YOURDOMAIN.COM. We read every message about accuracy.