S, M, L, XL and XXL correspond to the waistlines of 1 ft 9, 2 ft, 2 ft 1, 2 ft 2 and 2 ft 3 respectively, as shown in the following figure.

Waist circumference calculation method based on extended data

Male: Height (cm) ÷2- 1 1 (cm)

Female: Height (cm) ÷ 2- 13 (cm), 5% is the normal range.

As long as the waist circumference of the tested population is within the normal range calculated by the formula, the body mass index is almost within the normal range, and the percentage of waist circumference below or beyond the normal range is basically consistent with the corresponding percentage of body mass index decrease or increase. Conclusion: This formula can accurately calculate the normal waist circumference of Chinese adults, which is accurate, convenient and practical, and is superior to body mass index. It can be monitored and plays an active role in the early prevention of obesity, diabetes and cardiovascular diseases.

References:

Baidu encyclopedia-waist circumference