💪 Healthy Body Fat Percentage — US Navy Formula
Find out what is a healthy body fat percentage for men and women by age group. Uses the medically-validated US Navy logarithm formula (1–3% accuracy vs DEXA scan). Also shows BMI, Lean Body Mass (LBM), and BMR.
Body Fat Classification (Men)
Body Fat Calculator
Frequently Asked Questions
What is a healthy body fat percentage?
Men: Essential (2–5%), Athletes (6–13%), Fitness (14–17%), Average (18–24%), Obese (>25%). Women: Essential (10–13%), Athletes (14–20%), Fitness (21–24%), Average (25–31%), Obese (>32%). The "Fitness" range is ideal for most non-professional athletes.
What measurements do I need?
Men need 3 measurements: height, neck circumference (below the larynx), and waist circumference (at navel level). Measure in centimeters or inches consistently.
What is Lean Body Mass (LBM)?
LBM is your total body weight minus fat mass: LBM = Weight × (1 − body fat%). It includes muscles, bones, organs, and water. Tracking LBM is more meaningful than scale weight — an increase in LBM indicates muscle gain even if total weight stays the same.