Circumference-based body composition and BMI
Historical Hodgdon–Beckett (1984) body fat estimate from height and girths. Men: abdomen at the navel and neck; women: natural narrow waist, hips at their widest point and neck. BMI = weight / height².
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Calculation
Result
- Body fat
- 16.9 %
- Fat mass
- 12.7 kg
- Lean mass
- 62.3 kg
- Body mass index
- 24.5 kg/m²
Fitness range
Normal weight
Circumference estimates do not replace body composition measurements and are not the current official Navy standard. ACE body fat categories are descriptive references, not diagnoses; BMI is a separate adult classification. The model is not calculated for inapplicable girths.
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How it is calculated
Historical Hodgdon–Beckett (1984) body fat estimate from height and girths. Men: abdomen at the navel and neck; women: natural narrow waist, hips at their widest point and neck. BMI = weight / height².
Formula
Men: %fat = 495 / (1.0324 − 0.19077 × log₁₀(waist − neck) + 0.15456 × log₁₀(height)) − 450; Women: %fat = 495 / (1.29579 − 0.35004 × log₁₀(waist + hip − neck) + 0.221 × log₁₀(height)) − 450; BMI = weight / height²
Limits of the method
Circumference estimates do not replace body composition measurements and are not the current official Navy standard. ACE body fat categories are descriptive references, not diagnoses; BMI is a separate adult classification. The model is not calculated for inapplicable girths.
Sources of the method
This calculation is for reference only and is not medical advice, a diagnosis or a prescription. If you have a medical condition, are pregnant, take medication or have any doubts, discuss the result with a physician or a qualified nutrition professional.
How to use the calculation
Enter the starting values
Historical Hodgdon–Beckett (1984) body fat estimate from height and girths. Men: abdomen at the navel and neck; women: natural narrow waist, hips at their widest point and neck. BMI = weight / height².
Adjust the parameters
Historical Hodgdon–Beckett (1984) body fat estimate from height and girths. Men: abdomen at the navel and neck; women: natural narrow waist, hips at their widest point and neck. BMI = weight / height².
Read the result
Circumference estimates do not replace body composition measurements and are not the current official Navy standard. ACE body fat categories are descriptive references, not diagnoses; BMI is a separate adult classification. The model is not calculated for inapplicable girths.
Frequently asked questions
What does the calculation show?
Historical Hodgdon–Beckett (1984) body fat estimate from height and girths. Men: abdomen at the navel and neck; women: natural narrow waist, hips at their widest point and neck. BMI = weight / height².
What limitations apply?
Circumference estimates do not replace body composition measurements and are not the current official Navy standard. ACE body fat categories are descriptive references, not diagnoses; BMI is a separate adult classification. The model is not calculated for inapplicable girths.
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What next
Formula breakdowns, biomarker reference ranges and nutrition articles with cited sources are in the NutriFit knowledge base.
Go to the knowledge base