No Code Website BuilderCalculate your Body Mass Index using U.S. or metric measurements.
BMI is a general screening measure for adults. It does not distinguish between muscle and body fat, so it may be misleading for bodybuilders and highly muscular athletes.
Body Mass Index (BMI) is a measurement that compares your weight with your height. It is commonly used as a screening tool to classify weight ranges in adults. BMI can provide useful context, but it does not directly measure body fat or determine your overall health.
| BMI Range | Classification |
|---|---|
| Below 18.5 | Underweight |
| 18.5 to 24.9 | Healthy Weight |
| 25.0 to 29.9 | Overweight |
| 30.0 or higher | Obesity |
BMI does not account for differences between muscle mass and body fat. Strength athletes and bodybuilders may have a higher BMI because of their muscular development, even when their body fat percentage is relatively low.
For a more complete picture, consider additional measurements such as waist circumference, body composition, and individual health factors. BMI is one data point, not a complete assessment of fitness or physical health.
This calculator supports both U.S. customary and metric measurements. Enter your height in feet and inches and your weight in pounds, or switch to centimeters and kilograms. Your measurements are automatically converted when you change units, and the BMI calculation uses the same underlying formula.
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