Body fat estimate calculator using waist to height ratio rfm advertising disclosures. Their recent study found this simple measure is better at predicting body fat percentage than bmi. Just type your body height and waist circumference select sex and click calculate rfm button. Looking at the equations another way relative fat mass rfm in both metric and american measurements is. It uses w a ist to height ratio to estimate body fat percentage either measured by caliper or dxa scan. It plugs your height and your waist circumference into a formula and the resulting number is roughly equal to your body fat percentage.
Sex 0 for men and 1 for women. Richard bergman call the new measure the relative fat mass index or rfm. Relative fat mass rfm. The relative fat mass rfm index estimates body fat percentage based on the ratio of height and waist measurements. From the 365 anthropometric indices generated the final selected equation was as follows. From the 365 anthropometric indices generated the final selected equation was as follows.
64 20 x heightwaist circumference women. Woolcott and his co author dr. This fat mass index is considered a simple anthropometric procedure easier to estimate than other body fat percentage methods and more accurate than the body mass index bmi. A healthy rfm would be an rfm where youre not obese. If rfm corresponds to dxa. On this page is a body fat estimate calculator.
Rfm uses height and waist size to assess whole body fat levels. They arbitrarily defined obesity as dxa measured body fat percentage 339 for women and 228 for men. 64 20 heightwaist circumference 12 sex named as the relative fat mass rfm. 64 20 heightwaist circumference 12 sex named as the relative fat mass rfm. Measure your height and waist in either meters and centimeters or feet and inches enter your sex and hit calculate for an estimate. In other words rfm was almost as good a gauge of body fat as a specialist bit of medical equipment and all it needs is a tape measure.
Rfm calculator easy calculate relative fat mass index how to calculate body fat percentage. Based on data from 3456 adult patients in the us the rfm measurements closely matched those taken by a high tech dxa body scan widely considered the gold standard for measuring body tissue bone muscle and fat. The researchers compared the rfm with specialized high tech dexa scans which is considered a more precise way of measuring bone. 76 20 x heightwaist circumference how to interpret relative fat mass results.