Customize the Millimeters to Inches Converter.
Match your brand colors and fonts, then copy the embed code. Works on any site: WordPress, Squarespace, Webflow, raw HTML. Hosted and maintained by us, free forever.
Three steps, five minutes.
Customize below
Pick theme, color, and font. The preview updates live and the embed code updates with it.
Copy the snippet
Click Copy. It's a standard iframe with no scripts to install and no dependencies.
Paste on your page
Drop it into any HTML block. WordPress: Custom HTML block. Squarespace: Code block. Webflow: Embed element.
Before you paste.
Is it really free? +
Yes. No fees, no upsells, no tracking pixel for your visitors. We ask only that the small “Powered by MetricsCalculator” credit under the widget stays visible.
Will it slow my site down? +
No. The iframe loads lazily and independently of your page. Your Lighthouse and Core Web Vitals scores aren't affected.
Can I remove the “Powered by” link? +
The visible credit must stay. That's the entire price. If you'd prefer to mark it rel="nofollow" that's fine by us. Just keep it visible.
Who maintains it? +
We do. Formula updates, bug fixes, browser compatibility, mobile improvements. All pushed automatically. Your embed code never needs to change.
Can I get a fully custom build? +
For higher-authority sites we'll tune colors, fonts, and labels to exactly match your brand. Get in touch with your URL and we'll put something together.
Adding more than one?
Browse all 746+ calculators and customize any of them the same way.
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