Body Metrics
Calculate your BMI and understand your health status instantly.
Why it matters?
BMI is a screening tool used to identify potential weight problems. It doesn't measure body fat directly but relates to it.
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Enter your values to see the result
Real-time calculation enabled
About BMI Calculator
Body Mass Index compares weight against height as a single number. It is widely used as a rough population-level screening figure, which is precisely the limit of what it can tell you.
How to use it
- Enter your height.
- Enter your weight.
- Read the resulting index.
Worth knowing
BMI does not distinguish muscle from fat, or account for age, sex, build or where weight is carried, so it misclassifies athletes and older adults routinely. It is general information, not a health assessment — talk to a doctor about your own health.
Common questions
- Is a number outside the usual range a problem?
- Not on its own. It is a prompt for a conversation with a clinician, who can look at the things BMI cannot see.
- Does it work for children?
- Children are assessed against age and sex percentile charts instead, not the adult figure.