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Embed Our Calculators

Add any xCalculator to your website or blog for free — no API key, no account needed. Just paste an iframe.

How to Embed

Pick a Calculator

Choose from the list below — BMI, mortgage, tax, and more.

Copy the Code

Copy the iframe snippet for that calculator.

Paste & Done

Paste into your HTML. The calculator is live on your page instantly.

Standard Embed Code

Replace /health/bmi with the path of your chosen calculator:

<iframe
  src="https://xcalculator.net/health/bmi"
  width="100%"
  height="600"
  frameborder="0"
  scrolling="no"
  title="BMI Calculator — xCalculator.net"
  loading="lazy"
  style="border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,0.08);"
></iframe>

💡 Responsive Embed Tip

For fully responsive embeds that adapt to container width, wrap the iframe in a div with position: relative and use a percentage-based padding-bottom. Or simply set width="100%" — our calculators are already mobile-first.

Available Calculators

BMI Calculator

Body Mass Index using WHO classification

<iframe src="https://xcalculator.net/health/bmi" width="100%" height="600" frameborder="0" title="BMI Calculator — xCalculator.net" loading="lazy"></iframe>

Preview →

TDEE Calculator

Total Daily Energy Expenditure & calorie needs

<iframe src="https://xcalculator.net/health/tdee" width="100%" height="600" frameborder="0" title="TDEE Calculator — xCalculator.net" loading="lazy"></iframe>

Preview →

Body Fat % Calculator

Body fat percentage using the US Navy method

<iframe src="https://xcalculator.net/health/body-fat" width="100%" height="600" frameborder="0" title="Body Fat % Calculator — xCalculator.net" loading="lazy"></iframe>

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Due Date Calculator

Pregnancy due date estimator

<iframe src="https://xcalculator.net/health/due-date" width="100%" height="600" frameborder="0" title="Due Date Calculator — xCalculator.net" loading="lazy"></iframe>

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Compound Interest

Calculate investment growth over time

<iframe src="https://xcalculator.net/finance/compound-interest" width="100%" height="600" frameborder="0" title="Compound Interest — xCalculator.net" loading="lazy"></iframe>

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Mortgage Calculator

Monthly payment and amortization schedule

<iframe src="https://xcalculator.net/finance/mortgage" width="100%" height="600" frameborder="0" title="Mortgage Calculator — xCalculator.net" loading="lazy"></iframe>

Preview →

Income Tax Estimator

US federal income tax estimate (IRS brackets)

<iframe src="https://xcalculator.net/finance/income-tax" width="100%" height="600" frameborder="0" title="Income Tax Estimator — xCalculator.net" loading="lazy"></iframe>

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Loan Repayment

Monthly payment and total cost of any loan

<iframe src="https://xcalculator.net/finance/loan" width="100%" height="600" frameborder="0" title="Loan Repayment — xCalculator.net" loading="lazy"></iframe>

Preview →

Embed Terms

✅ Free to embed — All xCalculator tools are free to embed on any website, blog, or web app.

🔗 Attribution required — Embedded calculators must retain the "xCalculator.net" branding visible in the iframe. Do not use CSS or JavaScript to hide or obscure the source attribution.

🚫 No white-labeling — You may not present xCalculator's tools as your own proprietary software or remove the xCalculator branding for commercial resale.

📊 No data shared — Embedded calculators respect your users' privacy exactly the same way our site does — no data is collected from embedded usage.

⚡ Always up to date — Because calculators are served directly from xcalculator.net, embedded versions automatically receive formula updates and improvements.

Questions about embedding or need a custom integration? Contact us at [email protected].