Add a free calculator to your website
Pick any calculator, copy the snippet, paste it into your page. The widget is responsive, loads lazily, and always stays up to date.
195 calculators ready to embed — free, and no account needed.
1. Choose a calculator
195 calculators match
How it works
- The widget resizes to the width you give it — sidebar, article or full width.
- It loads only when it scrolls into view, so it does not slow your page down.
- Formulas and translations stay up to date without you touching the code again.
Below the widget there is one discreet credit line linking back to the calculator on Kalcufy. Nothing else, and no ads.
2. Copy the code
Paste it anywhere in your page's HTML. Nothing else to install.
bmi-calculator
<div data-kalcufy="bmi-calculator" data-locale="en"></div>
<script async src="https://www.kalcufy.com/embed.js"></script>3. This is what your visitors get
BMI Calculator