How to use Body Fat Calculator
- Choose your sex and enter your height.
- Measure your neck and waist (and hips for women) in centimeters.
- Read your estimated body fat and category.
About this tool
The US Navy method estimates body fat from circumference measurements using logarithmic equations. Measure the waist at the navel, the neck below the larynx and the hips at the widest point, keeping the tape snug but not tight.
Accuracy is typically within a few percentage points of more advanced methods such as DEXA, which makes it a convenient way to track change over time. This calculator gives general estimates from standard formulas and is not medical advice. Talk to a doctor or dietitian about your own health.
Frequently Asked Questions
- What is a healthy body fat percentage?
- Roughly 14 to 24% for men and 21 to 31% for women is considered acceptable, with lower values for athletes.
- Can I use inches?
- Enter centimeters. Multiply inches by 2.54 to convert.
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