Waist-to-Hip Ratio

The waist-to-hip ratio (WHR) is a simple anthropometric measurement that compares the circumference of the waist to that of the hips by dividing waist measurement by hip measurement. It is measured with a tape measure at standardized points (typically the narrowest part of the waist or just above the iliac crest and the widest part of the hips/buttocks) and produces a decimal value; higher ratios indicate relatively more abdominal fat, which has been associated with higher metabolic and cardiovascular risk. Typical threshold values often cited are about 0.85 for women and 0.90 for men, but these cut-offs can vary with age, ethnicity and measurement technique.

In a plastic surgery context the Waist-to-Hip Ratio is used as one of several tools to evaluate body proportions and to plan contouring procedures such as liposuction, tummy tuck or buttock augmentation; it can help set realistic aesthetic goals and guide where volume reduction or augmentation will best improve balance. WHR is not a standalone indicator of health or surgical risk—surgeons consider it alongside BMI, skin quality, fat distribution, medical history and patient expectations when recommending procedures and designing operative plans.