Clinical use
Use this calculator for weight classification based on height and weight in thegeneral workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.
Calculate BMI
Interpretation
Underweight <18.5. Normal 18.5-24.9. Overweight 25-29.9. Obese ≥30. Does not distinguish fat vs lean mass. Waist circumference adds cardiovascular risk context.
Required inputs
- Weight
- Height
Evidence and limitations
This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.
References
- WHO Global Database on BMI
Frequently asked questions
What is the Body Mass Index?
Body Mass Index is a clinical calculator used for Weight classification based on height and weight.
How do I interpret the Body Mass Index?
Underweight <18.5. Normal 18.5-24.9. Overweight 25-29.9. Obese ≥30. Does not distinguish fat vs lean mass. Waist circumference adds cardiovascular risk context.
What inputs are required for the Body Mass Index?
Required inputs include Weight, Height.
What is the evidence behind the Body Mass Index?
The Body Mass Index page cites WHO Global Database on BMI.
Next steps
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