Use an inelastic tape measure with a minimum scale of 1 mm and place it at the end of the line between the upper edge of the hip and the lower edge of the twelfth rib (usually the narrowest part of the waist).

Circle the abdomen horizontally. When measuring, the tape measure should be tightly attached to the skin, but the skin should not be strangled; Measure the waist length at the end of normal expiration to the millimeter. It is best to ask your family to help you measure and avoid visual errors.

There are also different waistlines:

Low waist: measure the waist circumference 2 inches below the navel.

Mid-low waist: The waist circumference of mid-low waist is measured below navel 1 inch.

Middle waist: The waist circumference of middle waist is measured along the waist at navel position.

High waist: measure the waist circumference along the waist at the position 1 inch above the navel (that is, the thinnest part of the human waist circumference).

Extended data:

The measurement method recommended by the World Health Organization is that the subjects stand with their feet 25 to 30 cm apart and their weight is evenly distributed. Measure the midpoint of the connecting line between the anterior superior iliac crest and the lower edge of 12 rib in the horizontal position.

The measuring ruler is attached to the soft tissue, but it cannot be pressed, and the measured value is accurate to 0. 1 cm. There are few mistakes in detecting obesity according to waist circumference.

Waist circumference-Baidu encyclopedia