Body Mass Index (BMI) had been one of the main criteria used to determine whether a person is overweight or obese. It was developed as a relatively easy screening tool, but it’s far from a perfect measurement. Recently, BMI has drawn criticism as to whether it’s an accurate assessment of health. For example, a high BMI does not take into account muscle mass and other critical factors that may impact health.
“BMI is an indirect measure of body composition meaning that it does not actually measure fat but calculates it based on height and weight,” says sports dietitian Marie Spano, RD, a certified strength and conditioning specialist, adding, “a person with high muscle mass can be categorized as obese or a person with high body fat and a low body weight may have a normal BMI yet an unhealthy amount of fat.”
BMI Calculator for men
In 2010, an article appeared in the Journal of the American Medical Association, which showed that nearly 75% of men aged 20 years and over were classified in the “overweight” category. Within this category another one third is categorized as obese. These findings are based on BMI calculator for men.
By gaining more knowledge about your own BMI value, you get insight into your own situation.
BMI scores can be divided into four categories. It is about underweight, normal weight, overweight and obesity / obesity. Scores of 18.5 and lower are classified in the category underweight. Normal weight ranges between 18.5-24.9. Reach for overweight standards 25-29.9. Obesity falls below a score of 30 and above.
What Is BMI for Kids?
BMI calculator for kids estimates how much body fat you have. It’s based on height and weight. But for kids, height and weight alone aren’t as accurate as they are for adults. Why? Because kids’ body fat percentages change as they grow. Their BMIs vary based on their age and gender.
That’s why when health care professionals talk about a child’s BMI, you won’t usually hear a plain number, like 25, but rather a percentile, like 75th. They show how a child’s BMI compares to other children of the same age and gender. To calculate the BMI percentile — which is also called “BMI for age” — a health care provider or an online tool like WebMD’s FIT Kids BMI Calculator takes a kid’s BMI (along with age and gender) and looks it up on a pediatric growth curve. This gives the child’s BMI percentile.
BMI percentiles are grouped into weight categories:
- Underweight: below the 5th percentile
- Healthy Weight: 5th percentile to the 85th percentile
- Overweight: 85th percentile to the 95th percentile
- Obese: 95th percentile or higher
For example, a 6-year-old boy with a 75th percentile BMI has a higher BMI than 75 out of 100 6-year-old boys. That’s in a healthy weight range.