Free nutrition tools

Free calorie, macro and TDEE calculators

Estimate maintenance calories, a macro starting point or a calorie deficit without signing up. Inputs run only in your browser and are not stored or sent.

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Maintenance calorie calculator

Estimate BMR and total daily energy expenditure with the Mifflin-St Jeor equation.

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Macro calculator

Turn an estimated calorie target into an adjustable protein, carbohydrate and fat starting point.

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Calorie deficit calculator

Explore a cautious daily deficit, a safety floor and a mathematical weekly-change estimate.

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Health disclaimer

These tools provide educational estimates, not medical advice. Equations cannot account for every body, medication or condition. Speak with a doctor or registered dietitian before a major dietary change.