Embed Our Calculators
Add any of our 20 mortgage calculators to your website for free. No signup, no API key, no limits. Just copy and paste.
Choose a Calculator
True Monthly Mortgage Cost
How Much House Can I Afford?
Down Payment Strategy
Rent vs Buy Analysis
Refinance Break-Even
Cash-Out Refinance
Recast vs Refinance
Points & Buydown
ARM vs Fixed Rate
Decision Timeline
Extra Payment Impact
Payoff Acceleration
Biweekly Payments
Rate Sensitivity
Amortization Schedule
DTI Calculator
Closing Cost Estimator
PMI Calculator
FHA Loan Calculator
VA Loan Calculator
Customize Button
Copy Embed Code
Paste this single line anywhere on your page. It creates a styled button that opens the calculator in a modal.
How It Works
Paste the code
Add the embed code to any page on your website — blog posts, landing pages, resource pages.
User clicks the button
A modal opens with the full calculator. No page redirect, no popups — it loads right on your site.
They get results
Your visitors get accurate mortgage calculations. Subtle Dett.io branding links back to more tools.
FAQ
Is this really free?
Yes. No signup, no API key, no usage limits. The only requirement is keeping the subtle "Powered by Dett.io" branding visible.
Will it slow down my site?
No. The embed script is under 5KB and loads asynchronously. The calculator only loads when a user clicks the button.
Can I customize the look?
You can customize the button color, text, and label. The calculator itself maintains a consistent design for accuracy and trust.
Does it work on mobile?
Yes. The modal is fully responsive and works on all screen sizes.
Can I remove the Dett.io branding?
The branding is part of the free offering. Contact us if you need a white-label solution for your organization.