What is the ideal weight for a 23 year old female that is 5'7?

Theoretically, the ideal BMI for adults of any height is 25 or below. For a person who is 5 feet 7.5 inches tall, this would mean the "ideal" weight of no more than 162 pounds.

However, you need to consider more than just weight and height when you determine a person's health status. Someone with a bigger frame may require more weight to be healthy; someone with a tiny frame may require less weight.