The embed code
Paste this where you want the calculator to appear:
<iframe src="https://calorieskit.com/embed/" width="100%" height="640" style="border:0;max-width:560px" title="TDEE Calculator by CaloriesKit" loading="lazy"></iframe>What you get
The full CaloriesKit TDEE calculator — metric, imperial and UK stone units, the NEAT/EAT two-question activity input with live multiplier, three validated BMR formulas, kcal/kJ output, and safe minimum-intake floors. All calculation happens in your visitor's browser; no data is sent anywhere. The widget weighs one stylesheet and one script, loaded lazily.
Terms
Free for any website, commercial or personal, on two conditions: the “Powered by CaloriesKit” attribution link stays visible and unmodified, and the widget isn't presented as medical advice. You can set the iframe height anywhere from 600–760px and the width to anything 320px or wider — the layout is responsive inside the frame.
Want a different calculator?
If you'd like an embeddable version of the deficit, macro or cycling calculator instead, contact us — it's a small change on our side.