BMI By Age For Women

Many women rely on the body mass index to measure their body fat, which is based on the measurements of weight and height. Not only can you utilize this calculator as a measurement of your body fat, but it can also help you assess your risks of cardiac, respiratory, and endocrine diseases. If you are within the BMI range that points toward obesity, you will be at a higher risk for getting these diseases at some point in your life.


The BMI calculator does have some limitation, because it can underestimate body fat, in older and elderly individuals, who have seen a decline in their muscle mass over the years. Of course, muscle mass decline is a normal part of the aging process, since the muscles atrophy (decline), as we age.

The BMI calculator can also overestimate body fat, in professional and nonprofessional athletes, whom have a muscular stature and build. It is crucial that you keep this in mind, when you are utilizing the calculator and chart.

Basic BMI Chart

This chart will give you an idea of what the BMI score means (NIH):

  • Underweight – Lower than 18.5 BMI
  • Normal – Range between 18.5-24.9 BMI
  • Overweight – Range between 25.0 29.9 BMI
  • Moderate Obesity – Range between 30.0-34.9 BMI
  • Immense Obesity – Range between 35.0-39.9 BMI
  • Morbid Obesity – Higher than 40.0 BMI

Women Versus Men

It is important to note that women with a 35 inch (88cm) waist or higher are at a great risk of health complications, much more so than men. There is a technique that can be used to accurately measure your waist.

  • You will need a cloth tape measure
  • Stand up straight, but continue to inhale and exhale
  • Place the cloth measuring tape just above the pelvic girdle (hip bones)
  • Exhale and then gather your waist measurement

Men with a waist measure of over 40″ (102cm) will be at a higher risk for complications.


If your BMI is in the obesity range and you suffer from a secondary medical condition that is linked to your weight classification. You are actually in luck, because if you are willing to cut your weight by 5-10%, you will not only decrease your risk of secondary complications, but you will also be improving your overall health status.

It is possible to begin a healthy diet and exercise regimen to combat those extra fat pounds. By doing this, you will see a dramatic decrease in those blood pressure, blood glucose, and serum cholesterol levels.

BMI Index Table

BMI table