Discover your exact daily calorie needs using the scientifically-backed Mifflin-St Jeor equation. Get personalized targets for weight loss, maintenance, or muscle gain.

Science-Based Formula
Mifflin-St Jeor Equation
Input your age, gender, weight, height, and activity level for a personalized calculation.
We calculate your Basal Metabolic Rate and Total Daily Energy Expenditure using the Mifflin-St Jeor equation.
Receive your daily calorie target and macro breakdown tailored to your specific fitness goal.