BMI Calculator
Calculate your Body Mass Index (BMI) based on your height and weight. BMI is a useful measure of overweight and obesity. It is calculated from your height and weight and is an estimate of body fat.
Your BMI: 0
Category: -
Healthy weight range: -
<18.5
18.5-24.9
25-29.9
30+
BMI Chart for Adults
| BMI | Weight Status |
|---|---|
| Below 18.5 | Underweight |
| 18.5 - 24.9 | Normal or Healthy Weight |
| 25.0 - 29.9 | Overweight |
| 30.0 and Above | Obese |
About BMI Calculator
Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. BMI is an inexpensive and easy screening method for weight category—underweight, healthy weight, overweight, and obesity.
How to Calculate BMI
BMI is calculated the same way for both adults and children. The calculation is based on the following formulas:
Metric Units:
BMI = weight (kg) / (height (m))2
US Units:
BMI = 703 × weight (lb) / (height (in))2
BMI Categories
For adults 20 years old and older, BMI is interpreted using standard weight status categories. These categories are the same for men and women of all body types and ages.
Limitations of BMI
BMI is a useful measurement for most people over 18 years old. But it is only an estimate and it doesn't take into account age, ethnicity, gender and body composition. BMI is not used for muscle builders, long distance athletes, pregnant women, the elderly or young children.