Compare adult ideal body weight estimates from Devine, Hamwi, Robinson, Miller and healthy BMI range. Includes limitations and metric/US units.
Quick answer
- What it calculates: adult ideal body weight estimates from Devine, Hamwi, Robinson, Miller, and a healthy BMI range.
- Inputs: age, sex, and height, with metric and US height units.
- Use carefully: these are broad reference formulas, not personal medical targets.
Ideal Weight
This ideal weight calculator compares several widely used adult reference formulas, including Devine, Hamwi, Robinson, and Miller. It also shows a healthy BMI range, which gives another height-based reference point.
These formulas are useful for quick screening, medical reference, and general comparison, but they are not personal health targets by themselves. They do not directly account for body composition, muscle mass, frame size, pregnancy, or specific clinical needs.
Weight Formulas
The calculator places the classic formulas side by side so you can compare how each one estimates adult ideal body weight from the same inputs. That is more useful than relying on one formula alone.
Healthy BMI Range
The healthy BMI reference range used here is 18.5 to 25. Because BMI is height-based, the matching weight range naturally changes as height changes.
Limitations
Ideal weight formulas are broad adult estimates. They may not be appropriate for children, teenagers, athletes, older adults, pregnant people, or anyone whose health needs require a more individualized assessment.
Formula
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Healthy BMI Range
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Healthy BMI Range
Robinson Formula
Miller Formula
Devine Formula
Hamwi Formula
Formula
| Formula |
Result |
| Robinson Formula | - |
| Miller Formula | - |
| Devine Formula | - |
| Hamwi Formula | - |
| Healthy BMI Range | - |
Ideal body weight formulas are general references. They do not account for body composition, muscle mass, medical conditions, or individual health goals.
Ideal Weight Calculator FAQ
What is ideal body weight?
Ideal body weight is a formula-based estimate of a reference weight for a given height and sex. It is best used as a comparison point, not as an absolute health target.
Which ideal weight formula is best?
There is no single best formula for everyone. Devine, Hamwi, Robinson, and Miller are all reference formulas with slightly different assumptions, so comparing them side by side is more useful than relying on one alone.
Why does the calculator show a healthy BMI range too?
The healthy BMI range gives a height-based weight range from BMI 18.5 to 25. It provides a second reference point beside the older ideal body weight formulas.
Can children and teenagers use this calculator?
Not as a clinical target. These are adult formulas, so they are not appropriate for children or teenagers. For under-18s, healthy weight is usually assessed with age- and sex-specific BMI percentiles.
Why are ideal weight formulas only estimates?
They do not account for muscle mass, body composition, athletic build, pregnancy, age-related changes, or medical conditions. They are broad reference values, not personalized health advice.
Who is an ideal weight calculator useful for?
It is useful for quick adult reference checks, healthcare discussions, fitness planning, and comparing weight ranges from different formulas without doing each calculation manually.
