As reported by The National Center for Health Statistics, the average weight of an American female is 166.2 pounds. The ideal weight for a 5'7" female according to the Hamwi formula, a popular method used by clinicians, is 143 pounds.
According to Health Status, the ideal weight for a 5'7" female should be between 127 and 159 pounds. This is calculated using the formula created by Dr. GJ Hamwi, which first appeared in an American Diabetes Association publication in 1964. The ideal weight depends on if a woman has a small, medium or large frame. A normal BMI, stated in Harvard Health Publications, should be between 18.5 and 24.9. However, the average female BMI reported by the Journal of the American Medical Association in 2012 was 28.7, which is classified as overweight.