Health & Fitness
Body Fat Calculator
Estimate your body fat percentage from waist, neck, hip and height measurements.
For information only. Results are estimates and are not medical advice. Please talk to a doctor or qualified professional about your own health.
About the Body Fat Calculator
The U.S. Navy method uses circumference measurements. It is convenient and useful for tracking change over time, but it can be off by a few percentage points compared with DEXA scans.
Measure in the morning, relaxed, with a flexible tape against bare skin. Take each measurement twice and use the average.
Frequently asked questions
What is a healthy body fat percentage?
Roughly 21–31% is considered average-to-fit for women and 14–24% for men, though ideal ranges vary with age and goals.
How often should I measure?
Once every 2–4 weeks is enough. Daily changes mostly reflect water and digestion.