BMI Calculator
Find your Body Mass Index and what category it falls into. Switch between metric (cm/kg) and imperial (ft-in/lb) units.
Enter your height and weight to see your BMI.
Ad space (enabled after AdSense approval)
BMI categories (WHO)
- Under 18.5 — Underweight
- 18.5 – 24.9 — Normal weight
- 25 – 29.9 — Overweight
- 30 and above — Obese
What is BMI?
Body Mass Index is a simple ratio of your weight to the square of your height. It's a quick screening tool used worldwide, though it doesn't account for muscle mass, bone density, or body composition — so treat it as a rough guide, not a diagnosis.
Is BMI accurate for athletes?
Not always. Very muscular people can have a high BMI while being perfectly healthy, because muscle weighs more than fat.
Is my data stored?
No. The calculation happens entirely in your browser.