Army Fat Body Calculator

Metric uses kilograms and centimetres; US uses pounds with feet and inches; UK uses stones and pounds.
Every equation here was fitted separately for men and for women.
Used by the Deurenberg and Jackson-Pollock equations, and by the Army age bands.
Body weight: kilograms (metric), pounds (US) or whole stones (UK).
Only used with UK stones-and-pounds: the pounds part, e.g. 11 st 4 lb is weight 11 and extra pounds 4.
Used when the unit system is metric.
Used when the unit system is US or UK.
The inches part of a feet-and-inches height.
Tape method only. Centimetres in metric, inches in US/UK units. Measure below the larynx.
Tape method only. Men measure the abdomen at the navel; women measure the natural waist.
Tape method, women only: the widest point of the hips and buttocks.
Body fat
32.32 %
Body Fat Percentage Calculator
Category
Exceeds the AR 600-9 standard
Fat mass
20.52 kg
Fat mass
45.2 lb
Lean (fat-free) mass
42.98 kg
Lean (fat-free) mass
94.8 lb
BMI
23.30 kg/m^2
Method used
Tape measure (US Navy / DoD circumference)
Standard error of this method
about 3.5 percentage points against hydrostatic weighing (Hodgdon & Beckett).
Army maximum allowable body fat
32 %
Meets the AR 600-9 body-fat standard
no
Waist-to-height ratio
0.477
Meets the 2026 Army waist-to-height standard
yes
Worked out from Hodgdon J.A. & Beckett M.B., Prediction of percent body fat for U.S. Navy men and women from body circumferences and height, Naval Health Research Center Reports 84-11 and 84-29 and 6 other sources.
Army Directive 2026-13 (effective 7 July 2026) rescinded the tape test and the AR 600-9 body-fat tables; the Army standard is now a waist-to-height ratio below 0.550. The table B-2 comparison above is historical.
Standard error of this method: about 3.5 percentage points against hydrostatic weighing (Hodgdon & Beckett).
Every method here is a regression fitted to a reference population, not a measurement of your body. Each carries a standard error of roughly 3-4 percentage points, and none is a diagnosis. Use a clinician, DXA or hydrostatic weighing if the number matters medically.

How this is worked out

5 steps
  1. Weight = 140.0 lb = 63.503 kg
  2. Height = 165.1 cm = 65 in
  3. Girth = waist + hip - neck = 31 + 40 - 13 = 58 in
  4. %fat = 163.205 log10(58) - 97.684 log10(65) - 78.387 = 32.321%
  5. AR 600-9 table B-2 allows 32% for a woman aged 25; 32.32% exceeds it.

Results are general information, not financial, tax, legal, medical or engineering advice.