Calorie Calculator

Your daily calories (TDEE) to maintain, lose, or gain

Maintenance calories
0
per day

Calorie Calculator — guide & how to use

What it does

This calorie calculator estimates your daily calories (TDEE) using the Mifflin-St Jeor formula and shows targets to maintain, lose, or gain weight. Calculated privately in your browser, free.

How to use it

  1. Enter your sex, age, height, and weight.
  2. Pick your activity level.
  3. Read your maintenance calories and the lose/gain targets.

How to embed this tool on your website

No account, no coding. Copy the embed code and paste it where you want it to appear:

<iframe src="https://snaptoolsuite.com/calorie-calculator/?embed=1"
  style="width:100%;max-width:560px;height:860px;border:0;"
  title="Calorie Calculator" loading="lazy"></iframe>
<p>Free <a href="https://snaptoolsuite.com/calorie-calculator/">Calorie Calculator</a> by Snap Tool Suite</p>
2 Paste it on your page
3 It just works

See it live: view a real embed example →

Frequently asked questions

How many calories should I eat?

At your TDEE to maintain; ~500 fewer to lose; ~500 more to gain. This tool estimates all three.

What is TDEE?

Total Daily Energy Expenditure — your BMR times an activity factor (1.2–1.9).

Is it really free?

Yes. 100% free, everything runs in your browser.

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🔒 Everything is calculated in your browser. We don't store or sell your data. Estimate only — not medical advice.