U.S. Navy Body Fat Calculator
Inputs
Results
Body Fat % — U.S. Navy
Body Fat % — BMI-based
BMI
Fat Mass
Lean Body Mass
BMR (Mifflin–St Jeor)
Ratios
Based on sources:
- Hodgdon JA, Beckett MB. Prediction of percent body fat for U.S. Navy men from body circumferences and height ; Naval Health Research Center, Report No. 84-11; 1984.
- Hodgdon JA, Beckett MB. Prediction of percent body fat for U.S. Navy women from body circumferences and height ; Naval Health Research Center, Report No. 84-29; 1984.
- Yavorski TP. Body Composition Assessment (BCA) ; Navy Physical Readiness Program; January 2023.
- Peterson DD. History of the U.S. Navy Body Composition program ; Military Medicine; January 2015.
- American Council on Exercise. Percent Body Fat Calculator & Body Fat Norms .
The U.S. Navy circumference (tape-measure) method is one of the most widely used techniques for estimating body fat content. It was developed by the Naval Health Research Center and is used to assess all U.S. Navy service members, who must meet specific body fat percentage (%BF) standards as part of their military service requirements.
The method estimates body fat from height and a few body circumferences (neck and waist for men; neck, waist and hip for women). It is a quick, low-cost screening tool that gives a reliable estimate for most people, though it is less accurate for very muscular individuals or those with atypical body proportions.
We try our best to make our calculators as precise and reliable as possible. However, this tool can never replace a professional doctor's assessment. If any health condition bothers you, consult a physician.
The U.S. Navy Body Fat Standards
Under the current Physical Readiness Program (OPNAVINST 6110.1J) and the 2023 Body Composition Assessment guidance, U.S. Navy service members are not permitted to exceed a single maximum body fat percentage, regardless of age:
| Group | Maximum allowable body fat |
|---|---|
| Males (all ages) | 26% |
| Females (all ages) | 36% |
Note: Earlier Navy policy used age-banded limits. The current standard applies one maximum body fat percentage across all age groups. Always refer to the latest official Navy guidance for the rules in force.
Body Fat Categories Table
The body fat ranges below follow the American Council on Exercise (ACE) classification. They show how a calculated body fat percentage compares with common health and fitness categories.
| Category | Women (% fat) | Men (% fat) |
|---|---|---|
| Essential fat | 10%–13% | 2%–5% |
| Athletes | 14%–20% | 6%–13% |
| Fitness | 21%–24% | 14%–17% |
| Acceptable / Average | 25%–31% | 18%–25% |
| Obese | 32% and over | 26% and over |
Body fat category ranges: American Council on Exercise (ACE) Percent Body Fat Norms.