What is a good weight-to-height ratio?

In general, a good weight-to-height ratio, or BMI for body mass index, is agreed to be between 18.5 and 25 for adults if following a standard BMI formula. There is no one good BMI, according to MedicalNewsToday.com.

BMI is calculated by multiplying height in inches by 703 and dividing that amount by weight in pounds squared or weight divided by height squared, and then multiplying the result by 703, according to the CDC. This equation does not take into consideration muscle mass, bone density, age or body proportions, all of which make a difference in a person's healthy weight in relation to their height, according to MedicalNewsToday.com.