Calculate your body fat percentage using measurements. Understand your body composition better than BMI alone.
How it works: This calculator uses the US Navy formula to estimate your body fat percentage based on age, gender, weight, height, and waist measurement. Body fat percentage is a better indicator of health than weight alone. It shows how much of your body weight is fat vs muscle.
Body fat percentage is the proportion of your body weight that is made up of fat. The rest is lean mass (muscle, bone, organs). It's a more accurate health indicator than BMI because it accounts for muscle mass, which weighs more than fat.
Healthy ranges vary by age and gender. For men: 10-20%, for women: 18-25%. Athletes typically have lower percentages (6-13% for men, 14-20% for women). Consult healthcare professionals for personalized guidance.
The US Navy formula used here is reasonably accurate (±3-4%) when measurements are taken correctly. More accurate methods include DEXA scans, hydrostatic weighing, or InBody composition analysis. This calculator provides reliable estimates for fitness tracking.
Measure horizontally at the level of your navel (belly button area). Stand straight, relax your stomach (don't suck in), and wrap the measuring tape snugly but not tightly. Accurate measurement is crucial for reliable results.
Muscular individuals can have "overweight" BMI but low body fat. Body fat percentage directly measures your body composition, so it's more accurate for health assessment. A combination of both metrics provides the best picture of your health.