Body Metrics
BMI, body fat, ideal weight, BMR & TDEE and waist-to-hip ratio.
BMI Calculator
Body Mass Index with metric or imperial units & category color coding.
BMR & TDEE Calculator
Daily calorie needs for maintenance, loss and gain — Mifflin-St Jeor.
Body Fat Calculator
U.S. Navy body fat formula from circumference measurements.
Ideal Weight Calculator
Four classic formulas — Devine, Hamwi, Robinson, Miller — plus frame adjustment.
VO₂max Calculator
Aerobic capacity from Cooper 12-min run or resting HR.
Waist-to-Hip Ratio Calculator
Abdominal fat distribution and cardiovascular risk.
Lean Body Mass Calculator
LBM from Boer, James or Hume formulas.
Resting Heart Rate Checker
RHR fitness rating with reference ranges by age.
A Body Shape Index (ABSI)
Mortality risk from waist, BMI and height — independent of BMI.
Body Measurement Calculators
Body measurement calculators compute health indicators from basic measurements. BMI, body fat percentage, ideal weight, and metabolic rate provide useful wellness benchmarks.
These calculators use established formulas (BMI, Mifflin-St Jeor, Navy method) that provide reasonable estimates for personal health tracking. They are not medical diagnostic tools.
Track your measurements over time to monitor progress toward health goals. Always consult healthcare professionals for medical advice.