Calculate BMI, body fat percentage, BMR, TDEE, lean body mass, ideal weight, and metabolic baseline with validated clinical formulas.
Calculate your Body Mass Index (BMI) and determine your healthy weight range.
Formula: Quetelet Index Formula (World Health Organization (WHO) Technical Report Series)
Calculate your BMI relative to the upper threshold of standard healthy weight.
Formula: BMI Prime Ratio Formula (International Journal of Obesity)
Estimate your Basal Metabolic Rate using Mifflin-St Jeor and Harris-Benedict formulas.
Formula: Mifflin-St Jeor & Harris-Benedict Equations (American Journal of Clinical Nutrition (1990))
Calculate your Total Daily Energy Expenditure and personalized calorie maintenance.
Formula: BMR × Physical Activity Factor (PAL) (FAO/WHO/UNU Human Energy Requirements Expert Consultation)
Estimate your body fat percentage and lean mass using the US Navy tape method.
Formula: US Navy Circumference Equations (Hodgdon & Beckett) (Naval Health Research Center (Report 84-29))
Calculate your lean body mass using Boer, James, and Hume clinical formulas.
Formula: Boer, James & Hume Anthropometric Formulas (European Journal of Applied Physiology / British Journal of Anaesthesia)
Calculate Fat-Free Mass Index and Normalized FFMI to assess muscular development.
Formula: Kouri et al. (1995) FFMI & Normalized Equation (Clinical Journal of Sport Medicine (1995))
Compare ideal healthy body weights across Devine, Robinson, Miller, and Hamwi formulas.
Formula: Devine, Robinson, Miller, & Hamwi Equations (Drug Intelligence & Clinical Pharmacy / American Journal of Hospital Pharmacy)
Evaluate cardiometabolic risk and visceral abdominal fat using the Ashwell shape chart.
Formula: Ashwell Waist-to-Height Ratio (WHtR) (British Medical Journal & Ashwell Associates Shape Chart)
Calculate your biological fitness age based on resting heart rate, exercise, and BMI.
Formula: HUNT Fitness Study Algorithm (NTNU) (Norwegian University of Science and Technology (NTNU) HUNT Study)