Waist Size for 18-Year-Old Girls: What's Average & Healthy

The average waist size for an 18-year-old girl varies depending on several factors, including genetics, ethnicity, diet, and activity level. However, a general estimate falls between 28 to 32 inches.

It's important to remember that this is just an average. Individual waist sizes can vary significantly and still be considered healthy. Focus on overall health and fitness rather than solely on a specific waist measurement.