Embed Our Calculators on Your Website
Add professional fitness calculators to your blog or website in seconds. 100% free, no API key required, fully responsive.
100% Free Forever
No fees, no API limits, no hidden costs. Use on unlimited websites.
Privacy Focused
No tracking, no ads, no data collection. Your users' privacy is protected.
Always Updated
Automatic updates, bug fixes, and improvements. No maintenance needed.
Customize Your Widget
Adjust the size and copy the embed code
Use % for responsive or px for fixed width
Recommended: 450px minimum
<iframe
src="https://www.myfitcalcs.com/embed/bmi"
width="100%"
height="450"
frameborder="0"
style="border: 1px solid #e5e7eb; border-radius: 8px;"
title="BMI Calculator by MyFitCalcs"
></iframe>Available Widgets
BMI CalculatorRecommended
Simple, fast BMI calculation widget
Calorie Calculator
Calculate daily calorie needs with BMR and TDEE
Macro Calculator
Protein, carbs, and fat breakdown by diet type
TDEE Calculator
Total Daily Energy Expenditure with goal calories
Body Fat Calculator
Calculate body fat percentage using Navy method
How to Install
Add the widget to your website in 3 easy steps
Choose your calculator and customize size
Select from our available widgets and adjust the width and height to fit your layout.
Copy the embed code
Click the "Copy Code" button to copy the iframe code to your clipboard.
Paste into your website
Paste the code into your HTML where you want the calculator to appear. Works with WordPress, Wix, Squarespace, and any HTML editor.
Frequently Asked Questions
Is it really free?
Yes! Our embed widgets are 100% free with no limits. We just ask that you keep the "Powered by MyFitCalcs" link at the bottom of the widget.
Do I need an API key?
No! Our embed widgets work immediately with just the iframe code. No registration, no API keys, no setup required.
Can I customize the appearance?
The widgets automatically adapt to light/dark mode based on your user's preferences. Currently, colors are not customizable to maintain consistent branding and quality.
Will this slow down my website?
No! The widgets are lightweight and load asynchronously. They won't affect your page load speed or Core Web Vitals scores.
Can I remove the "Powered by" link?
The "Powered by MyFitCalcs" link is required for free usage. It's small, unobtrusive, and helps us provide these tools for free. If you need a white-label solution, please contact us at myfitcalcs@outlook.com