Give your readers an instant debt payoff estimate without leaving your page. Copy one line of code — the calculator runs itself. Dark and light themes, no signup, no cost.
A live preview of the embeddable widget. Enter any numbers to test it.
Shows the month and year your reader will be completely debt-free, based on their actual inputs and amortization math.
Shows exactly how much interest they'll pay over the life of their debt — a powerful motivator for action.
Readers can toggle between Snowball (smallest balance first) and Avalanche (highest interest first) to see the impact.
Each calculation links to the full DebtMelt app with month-by-month schedule. The link carries UTM tracking so you can see traffic from your embed.
The widget adapts to any screen size. Works on mobile blog readers exactly as well as desktop.
One line of HTML. No JavaScript, no CSS, no external dependencies.
<iframe src="https://debtmelt.polsia.app/embed?utm_source=YOUR_SITE&utm_medium=widget" width="100%" height="520" frameborder="0" style="border-radius: 8px; max-width: 600px;" title="Free Debt Payoff Calculator"></iframe>
YOUR_SITE with your domain name (e.g., mysite.com) so you can see which embeds drive traffic in your analytics. Leave as-is to use the default tracking.
Two parameters let you adjust the widget for your site.
Switch between dark (default) and light themes to match your blog's color scheme.
Control the widget dimensions with your own CSS. The default is 100% wide, 520px tall.
Content that does something for readers earns backlinks, social shares, and repeat visitors.
Every embed creates a permanent "Powered by DebtMelt" backlink from your domain.
Under 50KB, loads in an iframe. Won't affect your Core Web Vitals or Lighthouse score.
The widget tracks only aggregate analytics (referrer domain, event type) — no personal data collected.
The iframe runs in its own origin. No access to your page's DOM, cookies, or data.
Replace YOUR_SITE in the embed URL to track which embeds generate the most referrals.
No paid tier, no watermarks, no usage limits. Your readers get the full experience forever.
Yes. Completely free for bloggers and website owners. No cost, no watermarks, no usage limits. Your readers get a fully functional debt payoff calculator without creating an account.
Copy the iframe code above and paste it into your blog's HTML editor. Works on WordPress, Squarespace, Webflow, Ghost, Medium, Substack, Wix, and any platform that supports HTML embeds.
Any platform that supports iframe embeds: WordPress, Squarespace, Webflow, Wix, Ghost, Medium, Substack, Shopify, Blogger, Tumblr, and raw HTML sites.
Two themes available: dark (default, dark slate + amber) and light (cream + amber). Switch by adding ?theme=light to the iframe src URL. Width and height controlled by your own CSS.
Yes. Each embed creates a permanent, editorial-style backlink to debtmelt.polsia.app. The widget loads asynchronously in an iframe so it won't affect your page's Core Web Vitals.
Pure HTML/CSS/JS with no dependencies. Uses real amortization math (monthly compounding interest). Readers enter balance, rate, and payment. Shows debt-free date, total interest, months to payoff. CTA links to full DebtMelt calculator with UTM tracking.
A calculator that does something for your audience is one of the most effective free tools you can add to your finance content.
Free forever — no account required