Waist refers to the horizontal circumference of the waist through the umbilical point, and its conversion unit is as follows:

Waist circumference inch is converted into cm: 1 inch =2.54 cm.

Waist circumference ratio is converted into cm: 1 ratio =33 cm.

The internationally recommended waist circumference measurement method is: stand with your feet 25 to 30 cm apart, and then measure the length around your navel with a tape measure.

Calculation method of healthy waist circumference:

1, male: height (cm) ÷2- 1 1 (cm).

2. 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.