What this tool answers
This page converts the adult BMI reference boundaries used by the existing tool into a weight interval for height. The interval is a screening reference, not an individual target or a definition of personal health.
Formula
Reference weight (kg) = reference BMI × height (m)², using 18.5 and 24.9.
Worked example: Reference arithmetic for 172 cm
At 172 cm, height squared is 2.9584 m². Multiplying by 18.5 and 24.9 gives approximately 54.73 kg and 73.66 kg. These are equation-based reference endpoints, not a recommended weight range for every person of that height.
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Limitations
BMI screening does not describe body composition or every individual circumstance. This adult reference is not a growth assessment or pregnancy assessment. A clinician can interpret measurements in context.
Frequently asked questions
What does the lower endpoint in this interval represent?
It is the weight obtained by multiplying the stated lower reference BMI by height squared.
Is this height-based interval an individualized target?
No. It is a screening-reference calculation and does not account for individual health or body composition.
Why does height need to be squared?
The BMI relationship uses mass divided by height squared, so solving for mass requires multiplication by height squared.