Fitness & Health Calculators

Accurate, evidence-based fitness tools to calculate your body mass index, daily energy expenditure, macro targets, and max strength potential.

BMI Calculator Body Mass Index score, WHO health categories, and healthy weight range for your height. BMR & TDEE Calculator Basal Metabolic Rate & Total Daily Energy Expenditure tailored to your daily activity level. Macro Target Calculator Protein, Carbohydrate, and Fat gram splits based on your calorie goals and fitness targets. 1-Rep Max (1RM) Calculator Estimate maximum single-rep lift capacity and percentage load breakdowns (Epley & Brzycki).