For example a 72 inch tall male with a neck measurement of 16 and a waist measurement of 36 has 19 percent body fat. Step 7 divide your bodyweight by the. All measurements are in inches. Measure your height and waist in either meters and centimeters or feet and inches enter your sex and hit calculate for an estimate. Insert your measurements into this formula. For women the formula is 163205 x log10 waist hip neck 97684 x log10 height in inches 78387.
Complete measurement instructions are given below the tool. Body fat estimate calculator. 86010 waist neck 100 70041 x height 100 3676. While there are obviously cases that dont fit the lookup tables have been surprisingly accurate. Fat 8601 log10c b 70041 log10a 3676 method 3 heritage bmi to body fat percentage method. The measurements needed to compute body fat percentage using the department of defense method for a male are.
For women si metrics centimeters the formula is 4. A gompertz curve did a pretty good job predicting body fat percentage when plotted against waist measurement so i used the data points to create a rather unwieldy function then spat it out into two tables for ease of reading. A 64 inch tall woman with a neck measurement of 12 inches waist 28 inches and hips 42 inches has 34 percent body fat. A height b neck circumference and c waist at navel. The result determines your percentage of body fat. 100 x 495 129579 035004 log 10 waist hip neck 022100 log 10 height 45 for imperial metrics inches high precision conversions are performed automatically by our body fat percentage calculator.
It uses waist to height ratio to estimate body fat percentage either measured by caliper or dxa scan.