Medically reviewed by Amelia MacIntyre, DO The body mass index (BMI) chart helps determine obesity levels in both women and men. Healthcare providers also use it to determine whether their patients ...

Use this body mass index (BMI) calculator to estimate your body fat and to see if you’re considered underweight, normal, overweight or obese.

According to the formula for BMI, which calculates your height relative to your weight, those who are underweight have a BMI of 18.5 or less, ... Size doesn’t matter and this chart proves it.

People with a BMI below 18.5 are considered underweight; normal weight falls between 18.5 and 24.9. ... In the same vein, BMI Calculator for Women & Men (Free, iOS) ...

Use this formula to calculate your BMI and refer to the BMI chart if you are trying to lose weight. ... BMI less than 18.5: Underweight; BMI between 18.5 25: Healthy weight; ...

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).

The CDC also warns parents not to consider its calculator as a replacement for a doctor's advice. "The most important thing to know is why your child is underweight," McCarthy noted.

While BMI is a commonly discussed metric, ... BMI calculator female: ... Underweight: BMI less than 18.5 Normal weight: BMI 18.5 to 24.9 ...