BMI Calculator
Calculate your Body Mass Index and see your healthy-weight range, instantly and privately.
BMI categories
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Healthy / normal |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obese |
How BMI is calculated
BMI = weight (kg) ÷ height (m)²
For the imperial calculator, weight in pounds and height in feet/inches are converted to metric automatically.
FAQ
What is a healthy BMI?
18.5 to 24.9 for most adults.
Is BMI a diagnosis?
No. It is a screening measure only and does not account for muscle mass, age or body composition.
Is it private?
Yes — runs entirely in your browser.