Formulas Used:
Males:
Body Fat % = -26.97 - (0.12 × body weight in pounds) + (1.99 × abdomen circumference in inches)
Females:
Body Fat % = -9.15 - (0.015 × body weight in pounds) + (1.27 × abdomen circumference in inches)
Measurement Instructions:
Measure abdominal circumference against the skin at the navel (belly button) level and parallel to the floor.
Source:
•
ALARACT 032/2025 - Army Body Composition Program Update
Note: This calculator uses the new Army single-site measurement method effective 2025. For comparison, see the
Navy Body Fat Calculator which uses a different multi-site circumference method.