Affiliate Disclosure: As an Amazon Associate, IronPeak Fitness earns from qualifying purchases made through links on this site, at no extra cost to you. Learn more

BMI Calculator

Calculate your body mass index — with honest context about its limits for muscular people.

BMI’s Blind Spot for Lifters

BMI cannot distinguish muscle from fat — plenty of lean, muscular people register as "overweight" by BMI alone. Treat it as one rough population-level screen, not a verdict. Waist circumference, progress photos, and how your training is going tell a lifter far more. For individual health assessment, talk to a healthcare professional.

Calculators provide general estimates for educational purposes only — they are not medical advice or a substitute for individual guidance from a healthcare professional or registered dietitian, especially for anyone under 18.