The Body Mass Index (BMI) Calculator allows you to measure your BMI using both the US Units (feet, inches, and pound) and Metric Units (centimeter and kilogram). Following are the formulas to calculate BMI in both units.
BMI Formula | |
U.S. Units | 703 x weight(lb) / height^{2}(in^{2}) |
Metric Units | weight(kg) / height^{2}(m^{2}) |
Following table shows the weight status for different BMI ranges of adults.
Category | BMI range – kg/m^{2} |
Thinness (Very Severe) | < 16 |
Thinness (Severe) | 16 – 17 |
Mild Thinness (Underweight) | 17 – 18.5 |
Normal or Healthy Weight | 18.5 – 25 |
Overweight | 25 – 30 |
Obese Class I (Moderate) | 30 – 35 |
Obese Class II (Severe) | 35 – 40 |
Obese Class III (Very Severe) | > 40 |
Following table shows the weight status for different BMI ranges of children and teens.
Category | Percentile Range |
Underweight | <5% |
Healthy weight | 5% – 85% |
At risk of overweight | 85% – 95% |
Overweight | >95% |