Free Paint Coverage Calculator Widget
The embedded Paint Coverage Calculator converts an area to paint into the gallons needed, or gallons on hand into the area they'll cover, using a coverage rate for the chosen surface type and the number of coats. It fits paint retailers, painting contractors, and home-improvement project guides.
One iframe and a single credit line, no sign-up step — no injected ad, no analytics call, no cookie set on your visitor.
Live preview
This snippet is generated straight from this page. If you'd rather step through the width/preview options interactively first, the embed builder does the same thing across all four converters.
Credit line included
Below the iframe, the snippet adds one small line, “Paint Coverage Calculator by ConstructionConverter”, pointing to the full converter. Leaving it in is the one thing that helps keep this free.
Where the Paint Coverage Calculator widget fits
- A paint retailer's product or "how much paint do I need" page
- A painting contractor's estimate-request page
- An interior-design or home-renovation project guide
How to add it to your site
- Plain HTML: paste the snippet where you want the converter to appear.
- WordPress: add a "Custom HTML" block and paste the snippet in — avoid the "Paragraph" block, it strips iframes.
- Squarespace / Wix / Webflow: add an "Embed" or "Custom Code" / "HTML" element and paste the snippet.
- The second line (
embed.js) is optional — it auto-sizes the frame height. You only need it once per page even with several converters.
Sizing & responsiveness
Set the width to 100% to fill its column, or a fixed pixel value for a sidebar. Height takes care of itself when embed.js is present — the frame grows and shrinks as the converter updates. Skip that script and the frame just holds a fixed 850px; the tool still works, it just gets a scrollbar on narrow screens if the content runs long.
Questions from site owners
Is this actually free to embed?
Yes — no account, no API key, and no usage cap. Apart from the converter, the embed code adds a single credit line that links back to it, and leaving that line in is the only thing asked.
Does it slow my page down or add tracking?
No. It runs in a single iframe, so it can't block the rest of your page from loading, and it ships no ad or analytics scripts of its own onto your site. The optional resizer script is a few KB and loads asynchronously.
Does it account for different surface types?
Yes — smooth drywall, standard new drywall, textured/stucco and masonry each have their own coverage rate, selectable in the embedded form.
Does it handle multiple coats?
Yes — readers set 1 to 3 coats, and the gallons figure scales accordingly.
Can I set a fixed width instead of responsive?
Yes — choose responsive or a fixed pixel width when you copy the snippet, with height handled automatically.
Trying to run a conversion yourself rather than embed one? The full Paint Coverage Calculator page has the same tool plus the underlying formula and a worked example. There's also the full list of embeddable converters if this isn't the one you need.