BMI Calculator
Body Mass Index from your height and weight.
BMI is a general screening measure, not a diagnosis. It doesn't account for muscle mass, bone density, or body composition. Talk to a healthcare provider for a full picture.
Body Mass Index is a widely used general health screening number based on height and weight. This calculates it in metric or imperial units and shows which BMI category the result falls into.
How it works
- Choose your unit systemMetric (cm/kg) or Imperial (ft-in/lb).
- Enter height and weightThe result updates live as you type.
- Read your BMI and categoryUnderweight, normal, overweight, or obese, per the standard WHO ranges.
FAQ
What is a healthy BMI range?
Generally 18.5–24.9 is considered normal weight by WHO standards, though this varies by individual factors like muscle mass and ethnicity.
Is BMI accurate for athletes?
Not always — BMI doesn’t distinguish muscle from fat, so very muscular people can show a higher BMI despite low body fat.