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