Body Mass Index Calculator
This calculator is the granddaddy of them all! BMI uses your height and weight to determine your body composition, or rather, your body's ratio of fat to muscle.
Excess body fat has been associated with a number of health risks including diabetes, heart disease, high blood pressure, arthritis and much more. So it makes sense to keep your body fat in check!
How It Works
BMI is calculated as follows:
| Weight (lbs.) | = % body fat |
| Height |
See the below table for typical weight averages.
| Table 1: BMI Ranges | |
| Weight | BMI range |
| Underweight | Less than 18.5 |
| Normal Weight | 18.5 - 24.9 |
| Overweight | 25 - 29.9 |
| Grade I Obesity | 30 - 34.9 |
| Grade II Obesity | 35 - 39.9 |
| Grade III Obesity | above 40 |