- Lower reference boundary
- 56.66 kg
- Upper reference boundary (exclusive)
- 76.56 kg
How it works
Rounding can hide an exclusive boundary
At 1.70 m, the upper reference boundary is 72.25 kg because it corresponds to BMI 25. A rounded display can obscure that boundary; this mathematical interval is not a prescribed personal weight range.
Understanding an adult reference range
The displayed range comes from the adult reference method explained on the page. Check height units first, because the result depends directly on that measurement. The range is not an individualized assessment of nutrition, fitness, or health. A person's medical context and changes over time require information that a height-based calculation cannot provide.
Adult reference range: formula and assumptions
Reference weight = BMI × height(m)², using adult BMI boundaries 18.5 and 25.
The displayed upper boundary is exclusive. This population screening interval is not an individual weight target.
Worked example
Using the Adult reference range example:
- Measurement system
- Metric (kg, cm)
- Height (cm)
- 175
- Age (years)
- 30
Reference weight = BMI × height(m)², using adult BMI boundaries 18.5 and 25.
Example result
Lower reference boundary: 56.66 kg
Upper reference boundary (exclusive): 76.56 kg
These are illustrative inputs. Change the values to explore a different scenario.
Formula references
References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.
Common questions
Why is the upper reference weight shown as exclusive?
The interval uses BMI from 18.5 up to, but not including, 25. The corresponding upper weight is therefore a boundary.
Is every weight in this interval personally appropriate?
Not necessarily. This population screening interval does not account for pregnancy, muscle mass or individual medical circumstances.
Prepared by Finflo. See our methodology and editorial policy. Read the relevant professional-advice limitations.