Waist–hip ratio
The waist-hip ratio or waist-to-hip ratio (WHR) is the dimensionless ratio of the circumference of the waist to that of the hips.
This is calculated as waist measurement divided by hip measurement (W ÷ H). For example, a person with a 30″ () waist and 38″ () hips has a waist-hip ratio of about 0.78.
Waist
Waist–hip ratios of 0.7 for women and 0.9 for men have been shown to correlate strongly with general health and fertility. Colloquially this shape is compared to the hourglass shape.