What is the ideal weight for a 5' 8'' 23 year old female?

The best current way to find out what your ideal weight is, regardless of age, is to use the body mass index or BMI formula. This formula goes as such: Weight in pounds X 703 / height in inches squared and compare the results to this: A BMI below 18.5 is underweight, from 18.5 through 24.9 is normal or desired, from 25.9 through 29.9 is overweight, and a BMI which registers at 30 or over is considered obese. so a 5'3" female weighing 130 lbs. would have a BMI of 23.03 and would be perfectly normal. A 5'3" woman could weigh up to about 141 lbs. and still be in the normal range without being considered overweight.