Add a free finance calculator to your site in seconds.
20 interactive calculators — mortgage, retirement, FIRE, compound interest — your readers can use without leaving the page. Paste one line of code into any post, sidebar, or landing page. Mobile-friendly and looks great on every theme.
Try any calculator. Grab the code.
Pick one below — the snippet updates live. This is exactly what your visitors will see.
<script async src="https://digital.finance/embed-loader.js"></script> <div data-df-widget="calc" data-id="mortgage"></div>
Paste this anywhere in your site's HTML. The widget will auto-resize to fit its content — no fixed height needed.
Why embed our calculators
Built for finance bloggers, advisors, and fintech founders who want a polished tool inside their content — without building it themselves.
One script tag plus a placeholder div. Auto-resizes to fit your page — no fixed heights, no inner scrollbars.
No API key, no rate limit. Embed as many calculators on as many pages as you like.
Every calculator was rebuilt for phones first. They fit cleanly inside narrow content columns.
Strict iframe sandbox. No cookies, no analytics, no scripts injected into your site.
Common questions
Everything you might want to check before pasting that snippet.
How do I install a calculator on my site?
Paste the snippet from any calculator above anywhere in your HTML. The widget loads asynchronously and auto-sizes itself. If your site blocks third-party scripts, use the “Direct iframe” snippet instead.
Is it really free? What's the catch?
Truly free. The only requirement is the small "Powered by Digital.Finance" attribution at the bottom of each widget — it links back to the canonical calculator page on our site. We monetise the directory itself; the calculators are free distribution.
Can I customise the design / branding?
Not in the free tier — every embed inherits the calculator's native dark theme. Custom theming and white-label (no attribution) are planned for a future premium tier.
Do you set cookies on my visitors?
No. The iframe runs without `allow-same-origin`, which means we can't set cookies on your domain even if we wanted to. We don't serve AdSense, Google Analytics, or any tracker inside embedded widgets.
What if I want to remove the embed later?
Just delete the script tag and placeholder div from your HTML. There's nothing to uninstall — no caches, no service workers, no localStorage.
Will embedding hurt my SEO?
No. The iframe content is on our domain, so Google sees it as a third-party widget rather than thin content on yours. The "Powered by" backlink is the only outbound link — which both Google and we treat as standard attribution.