Body Fat Calculator

About

BMI treats muscle and fat the same. That's why Tom Brady is "overweight" and The Rock is "obese" according to BMI. Body Fat Calculator uses the science-backed U.S. Navy circumference method to give you a more accurate picture of your body composition. 🔒 Privacy-first: All calculations happen in your browser (zero data collection) ⚡ Instant: No signup, no payment, no waiting 📚 Educational: Explains what your body fat % means for your health 📱 Works everywhere: Mobile, tablet, desktop