Army Body Fat Calculator

US Army circumference-based body-fat estimate (simplified).

Army Body Fat Calculator helps you uS Army circumference-based body-fat estimate (simplified). Enter height, neck, waist, and hip, review the breakdown, and use the guidance below to understand what the number means — and what it does not. What the Army Body Fat calculator does Army Body Fat Calculator is built for body measurements, calories, and everyday health math. US Army circumference-based body-fat estimate (simplified). You enter height, neck, waist, and hip, then Simple Calculators computes the result instantly. These tools use widely published formulas. They are educational screens, not a diagnosis. How the math works Choose your units and Sex, then enter Height, Neck and Waist — women also enter Hip. Centimetres are converted to inches first. For men, body fat % = 86.01 × log(waist − neck) − 70.041 × log(height) + 36.76; for women, 163.205 × log(waist + hip − neck) − 97.684 × log(height) − 78.387, where log is the base-10 logarithm. This is the multi-site formula from the older Army regulation (AR 600-9); in 2023 the Army moved to a waist-and-weight tape test, so official results can differ. The formula: Body fat = 86.01 × log₁₀(waist − neck) − 70.041 × log₁₀(height) + 3…