Embed the refinance calculator

A current mortgage against a new rate and term, side by side. Free to use on any site, with one line of HTML and nothing to sign up for.

Live preview

This is the real widget. Try changing the numbers.

Calculator by smartfin.fyi

Copy this

<iframe src="https://smartfin.fyi/embed/refinance.html"
        width="100%" height="1090" style="border:0"
        title="Refinance calculator" loading="lazy"></iframe>
<p style="font-size:12px;margin:6px 0 0">Calculator by <a href="https://smartfin.fyi/refinance-calculator.html">smartfin.fyi</a></p>

Notes

It fills whatever width you give it, down to phone screens.
It follows your reader's light or dark mode automatically.
It does not track your visitors. No cookies and no analytics. The one outside file is Chart.js, the open-source chart library, loaded from cdnjs, which sets no cookies.
A height of 1090 suits most layouts. Increase it if your site uses larger text.
The credit line under the widget is optional. Keep it, delete it, or add rel="nofollow" to its link. The widget works the same either way.

Terms: there aren't many. Use it on any site, including commercial ones, at no cost. We may improve the calculator over time, so the embedded version can change. If it ever needs to be retired, this page will say so first.

The full version

The complete refinance calculator on smartfin.fyi has more detail than the embed, including a full breakdown by year.

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