Home / Embed a calculator

Add a free calculator to your website

Give your visitors an accurate, up-to-date calculator. Copy the code, paste it into any page, and it works on phones, tablets and desktops.

How it works

Pick a calculator below and select Copy code.
Paste the code into your page, blog post or website builder (WordPress, Wix, Squarespace and others support HTML blocks).
Optional: add the auto-height script once per page so the calculator always fits.

Embedding is free for personal, business, real estate, mortgage broker and educational websites. Please keep the credit link below the calculator.

Mortgage Calculator

<iframe src="https://smartcalculator.io/mortgage-calculator/?embed=1" title="Mortgage Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/mortgage-calculator/">Mortgage Calculator</a> by SmartCalculator</p>

Canadian Mortgage Calculator

<iframe src="https://smartcalculator.io/canadian-mortgage-calculator/?embed=1" title="Canadian Mortgage Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/canadian-mortgage-calculator/">Canadian Mortgage Calculator</a> by SmartCalculator</p>

Take-Home Pay Calculator

<iframe src="https://smartcalculator.io/take-home-pay-calculator/?embed=1" title="Take-Home Pay Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/take-home-pay-calculator/">Take-Home Pay Calculator</a> by SmartCalculator</p>

Loan Calculator

<iframe src="https://smartcalculator.io/loan-calculator/?embed=1" title="Loan Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/loan-calculator/">Loan Calculator</a> by SmartCalculator</p>

BMI Calculator

<iframe src="https://smartcalculator.io/bmi-calculator/?embed=1" title="BMI Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/bmi-calculator/">BMI Calculator</a> by SmartCalculator</p>

Calorie Calculator

<iframe src="https://smartcalculator.io/calorie-calculator/?embed=1" title="Calorie Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/calorie-calculator/">Calorie Calculator</a> by SmartCalculator</p>

Compound Interest Calculator

<iframe src="https://smartcalculator.io/compound-interest-calculator/?embed=1" title="Compound Interest Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/compound-interest-calculator/">Compound Interest Calculator</a> by SmartCalculator</p>

Retirement Calculator

<iframe src="https://smartcalculator.io/retirement-calculator/?embed=1" title="Retirement Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/retirement-calculator/">Retirement Calculator</a> by SmartCalculator</p>

Down Payment Calculator

<iframe src="https://smartcalculator.io/down-payment-calculator/?embed=1" title="Down Payment Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/down-payment-calculator/">Down Payment Calculator</a> by SmartCalculator</p>

GPA Calculator

<iframe src="https://smartcalculator.io/gpa-calculator/?embed=1" title="GPA Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/gpa-calculator/">GPA Calculator</a> by SmartCalculator</p>

Age Calculator

<iframe src="https://smartcalculator.io/age-calculator/?embed=1" title="Age Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/age-calculator/">Age Calculator</a> by SmartCalculator</p>

Percent Calculator

<iframe src="https://smartcalculator.io/percent-calculator/?embed=1" title="Percent Calculator" width="100%" height="900" style="border:0;max-width:760px" loading="lazy"></iframe>
<p style="font-size:13px"><a href="https://smartcalculator.io/percent-calculator/">Percent Calculator</a> by SmartCalculator</p>

Optional: automatic height

Paste this once anywhere on the page to resize the calculator to its content.

<script>window.addEventListener('message',function(e){if(e.origin!=='https://smartcalculator.io'||!e.data||!e.data.scHeight)return;document.querySelectorAll('iframe[src^="https://smartcalculator.io"]').forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.scHeight+'px';});});</script>

Need a different calculator?

Any calculator on SmartCalculator can be embedded: take its address and add ?embed=1, for example https://smartcalculator.io/tip-calculator/?embed=1. Questions? Contact us.

Updated November 2, 2026.