This BMI Calculator Won’t Give You an Accurate Measure of Overall Health Body mass index is only one part of an overall assessment of your health and not very useful for athletes, in particular.

Do you know if you are at a healthy weight? Use our online calculator to find out. ... Use our BMI calculator to see if you're at a healthy weight. Updated: Jan. 12, 2016, 10:30 a.m.

We were too….As Shirley discovered, her results page showed the above chart claiming 14.8 to be in the healthy BMI range for an 18-year-old (she’s closer to 18 than 17).