Calculate your Body Mass Index instantly using metric or imperial units.
Body Mass Index (BMI) is a simple calculation using your height and weight, used as a rough screening tool to categorize weight ranges that may lead to health problems. It's calculated as weight (kg) divided by height (m) squared.
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Healthy weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obese |
BMI doesn't distinguish between muscle and fat, so athletic or muscular individuals may show a higher BMI despite having low body fat. It's a population-level screening tool, not a precise individual diagnostic — use it as a general reference point rather than a definitive health measure.
Not particularly — BMI doesn't distinguish muscle from fat, so muscular or athletic individuals often show a higher BMI despite low body fat.
The standard BMI formula and category thresholds are the same for both sexes, though some health organizations note that body fat distribution differs by sex as a limitation of the measure.
Talk to a healthcare professional — they can assess your specific situation far more accurately than a general screening number alone.