Body Fat Calculator
How much of your weight is fat tells you far more than the scale alone. This estimate uses a few tape measurements, no calipers or clinic visit needed.
How it's calculated
We use the US Navy circumference method, which estimates body fat from your height and the difference between your neck, waist and (for women) hip measurements. It is the same approach used in fitness assessments worldwide.
How to read your result
Treat the figure as a guide that is most useful for tracking change over time. The same person measured carefully each month will see a reliable trend, even if the single number is a few points off.
Common questions
Measure relaxed, against bare skin, at the same time of day. Waist at the navel, neck just below the larynx, and for women, hips at the widest point. Keep the tape level and snug, not tight.
Method: US Navy circumference (tape) method.