Calculate Body Mass Index from height and weight.
Enter weight in kg and height in cm.
A 70 kg person at 175 cm has a BMI of about 22.9. BMI is a screening measure.
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 - 24.9 | Normal weight |
| 25 - 29.9 | Overweight |
| 30 and above | Obese |
Body Mass Index (BMI) is a measure that uses your height and weight to estimate whether your weight falls in a healthy range for your height.
Commonly used ranges are: below 18.5 underweight, 18.5 to 24.9 normal weight, 25 to 29.9 overweight, and 30 or above obese, though these thresholds can vary slightly by region and guideline.
BMI does not account for muscle mass, bone density, age, or body composition, so it can be misleading for athletes, older adults, and some other groups. It is a screening tool, not a diagnosis.