Free · No sign-up · No API key
Embed Our Calculators on Your Website
Real-estate site, personal-finance blog, credit union, HR portal — drop any DollarCalcs tool into your pages with one snippet. The widgets are responsive, load lazily, auto-resize, and always use current-year tax data because they're served from the same engines as the site.
Copy this snippet into your page
<iframe src="https://dollarcalcs.com/embed/mortgage" width="100%" height="980" style="border:1px solid #D9DED9;border-radius:12px;" title="Mortgage Calculator – DollarCalcs" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.type==="dollarcalcs-resize"){var f=document.querySelector('iframe[src*="dollarcalcs.com/embed/mortgage"]');if(f)f.style.height=e.data.height+20+"px"}});</script>Live preview
Terms of use
The widgets are free for any website, commercial or personal. The only requirement is that the "Powered by DollarCalcs" attribution link at the bottom of the widget stays visible and unmodified — that link is how the free service pays for itself. Don't frame the widgets in a way that hides the attribution, misrepresents who built them, or wraps them in your own ads inside the iframe. We may update the tools (rates, design, features) at any time; embedded widgets update automatically.
Need something custom?
Want a specific default scenario, your state preloaded, or a tool we haven't built? Tell us — the URL parameters that prefill our calculators work inside embeds too (for example, /embed/mortgage?price=500000&rate=6.25).