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Body-fat estimate

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Body-fat estimate

Approximate body-fat percentage using Relative Fat Mass (RFM).

Age (years)

Height (cm)

Waist circumference (cm)

Equation / reference group

How to measure

For RFM, measure around the abdomen just above the top of the hip bone (NHANES method), after a natural breath out. Keep the tape horizontal without compressing skin. This differs from the waist-to-height midpoint method.

Published equations and reference values use male/female groups. They may not fit everyone, including people receiving hormone therapy; seek individual advice if unsure.

I am 20 or older, not pregnant or breastfeeding, and have no eating disorder or medical restriction that affects this estimate.

Educational information for adults, not a diagnosis, treatment plan or personal intake prescription. Individual needs vary.

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BMI results are for educational purposes only and are not a medical diagnosis. Consult a qualified healthcare professional for individual advice.