Calculate BMI
Read the result carefully
BMI compares body weight with height. It is useful for population screening and quick personal tracking, but it does not show muscle mass, body fat distribution, pregnancy status, medical history, or athletic build.
Ask a clinician before using BMI to make medical decisions, especially for children, pregnancy, older adults, eating disorders, bodybuilding, or significant recent weight change.
UnderweightHealthy rangeOverweightObesity range
BMI categories used by many adult screening charts
| BMI | Category | Note |
|---|---|---|
| Below 18.5 | Underweight range | May need context such as nutrition, illness, or body frame. |
| 18.5 to 24.9 | Healthy weight range | A general screening range, not a complete health assessment. |
| 25.0 to 29.9 | Overweight range | Waist measurement, blood pressure, labs, and fitness matter too. |
| 30.0 and above | Obesity range | Discuss risk factors and care options with a qualified professional. |