Body Fat Percentage Calculator. Calculate body fat metrics using standard Navy circumference methods. Starlightopia provides this tool completely free and online, optimized for instant, accurate computations.
Technical Specifications
CategoryHealth
Target ValueBody Fat Percentage
Inputs Required (5)
Gender (select)
Height (cm) (number)
Neck Circumference (cm) (number)
Waist Circumference (cm) (number)
Hip Circumference (cm) - Female Only (number)
Frequently Asked Questions
How does the US Navy body fat method work?
The US Navy method estimates body fat percentage using circumference measurements of the neck and waist for men, adding the hips for women, alongside total height.
What is a healthy body fat range for men and women?
Healthy ranges are typically 10% to 20% for men and 20% to 30% for women.
Why do women naturally carry higher body fat percentages than men?
Women carry higher body fat percentages due to evolutionary adaptations for childbirth and hormone regulation.
What is essential fat?
Essential fat is the minimal amount of fat required for physiological functions like organ protection and vitamin absorption.
How accurate are body fat tape measurements?
Tape measurements provide a good, practical estimate, though methods like DXA scans or hydrostatic weighing offer higher accuracy.