Paint Calculator
Calculate how much paint you need for your project. Enter room area, coverage rate, and paint price to get your estimated paint cost instantly.
The Paint Calculator below works out your result the moment you type — no sign-up, no cost. Ideal for homeowners and tradespeople pricing up a project. Enter room area (sq ft), number of coats, coverage (sq ft per gallon) and price per gallon ($) and the total updates live.
How the paint calculator works
Just fill in the fields above — room area (sq ft), number of coats, coverage (sq ft per gallon) and price per gallon ($) — and the paint calculator does the maths instantly. Nothing is sent anywhere; the calculation happens right in your browser.
Want this paint calculator on your own site?
Add it free with RGT Quote Builder — a drag-and-drop WordPress calculator plugin with 100+ ready-made templates and no paywall.
FAQ
Is the paint calculator free?
Yes — completely free to use, with no account and no limits.
Can I add this paint calculator to my WordPress site?
Yes. Install the free RGT Quote Builder plugin, pick the Paint Calculator template, and drop it onto any page with a shortcode or block.
Can I customise the fields and pricing?
Absolutely — every field, price and formula is editable in the drag-and-drop builder.