Health & Fitness
Body Fat Percentage Calculator
Enter body measurements to estimate body fat percentage.
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Your result
Based on the values you enter
Body Fat Percentage result
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Your result explanation will appear here.
Useful next checks
- Treat the result as general guidance, not a diagnosis.
- Check unusual results with a qualified health professional.
- Retest with accurate measurements for a better estimate.
Intro
Use this body fat percentage calculator to estimate body fat from circumference measurements.
How it works
Enter sex, height, neck, waist, and hip measurements. The calculator applies the U.S. Navy method.
Formula
The Navy method estimates body density using logarithms of body measurements, then converts the result to a body fat percentage.
Example calculation
Measurements should be taken consistently with a flexible tape measure for the most useful estimate.
Frequently asked questions
- This is an estimate and can vary with measurement technique.
- Body composition scans and professional assessments may be more precise.
How accurate is this method?
It is an estimate and depends heavily on consistent measurements.
Why is hip measurement included?
The Navy formula uses hip measurement for women and ignores it for men.