What the tool does, how to run it, and what to expect from the result.
Find your maintenance calories, the daily intake that keeps your weight steady, from the Mifflin-St Jeor equation and your activity level, with cut and bulk targets. It is an estimate for general guidance and is not medical advice; talk to a professional for personal health decisions.
A quick way to understand who this helps, what it solves, and where it connects next.
People tracking fitness, nutrition, and everyday health goals.
A quick, private health estimate without an account or app install.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free, with no sign-up, no watermark, and no usage limits.
No. Everything runs locally in your browser, so your details never leave your device and the tool works offline.
Resting energy (BMR) from the Mifflin-St Jeor equation is multiplied by an activity factor from 1.2 (desk job) to 1.9 (training twice a day). A 30-year-old man at 70 kg and 175 cm with moderate activity maintains on about 2,550 kcal.
Equations land within about 10% for most people. Track your weight for two to three weeks at the suggested intake and adjust by 100-200 kcal if it moves.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Calculations run locally in your browser; nothing is uploaded. An estimate, not medical advice.