TDEE & Body Fat
Maintenance, Navy BF, macros
Measure neck, waist, and (for women) hips — we apply the logarithmic U.S. Navy formula and show lean mass, fat mass, and category.
Results update live. Not medical advice.
Below current weight to estimate fat-loss timeline (linear model).
The Navy formula uses log10 of circumference differences relative to height. Men need waist minus neck; women add hips because of typical fat patterning. Measure the waist at the navel, neck below the larynx, and hips at the widest point.