Clinical BMI Calculator - draihi
Calculate Body Mass Index (BMI) with clinical classifications and associated risk factors.
Clinical Context
Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, overweight and obesity in adults. It is defined as the weight in kilograms divided by the square of the height in metres (kg/m²).
WHO Classification Table
| Classification | BMI (kg/m²) | Risk of Comorbidities |
|---|---|---|
| Underweight | < 18.5 | Low (but risk of other clinical problems increased) |
| Normal range | 18.5 - 24.9 | Average |
| Overweight | 25.0 - 29.9 | Increased |
| Obese (Class I) | 30.0 - 34.9 | Moderate |
FAQ
Is BMI an accurate measure of body fat?
BMI is a surrogate measure of body fatness because it is a measure of excess weight rather than excess body fat. Factors such as age, sex, ethnicity, and muscle mass can influence the relationship between BMI and body fat.