Get your BMI and the WHO weight category from your height and weight — the same number your doctor's chart uses.
The BMI Calculator applies the standard weight-divided-by-height-squared formula and drops the result into the WHO band — underweight, normal, overweight, or one of the obese categories — the same chart your GP has on the wall. It accepts either metric (cm, kg) or imperial (feet/inches, lbs), so you don't have to convert your height first.
Fine as a screening number and a way to track your own trend over time; not a diagnosis. BMI treats muscle and fat the same, so it overstates the risk for athletic builds and understates it for people who carry weight around the waist. Use the number as one signal alongside waist measurement, blood work and how you actually feel — not as the whole picture.
BMI uses height and weight to estimate if your weight is healthy. Calculated as weight / height².
Underweight: <18.5, Normal: 18.5-24.9, Overweight: 25-29.9, Obese: 30+.
It's a screening tool but doesn't account for muscle mass or body composition.
Yes, supports both systems.
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