"Ideal weight" formulas have been used in medicine for decades, and none of them agree exactly — which is why this calculator shows four of the most commonly cited ones (Devine, Robinson, Miller, and Hamwi) side by side, along with their average, so you get a range rather than a single overconfident number.
How to use the ideal weight calculator tool
- 1
Select your gender
The formulas use slightly different constants for men and women.
- 2
Enter your height
In centimeters.
- 3
Read the estimates
See four classic formulas' results plus their average.
Common use cases
Get a general weight target range
See a reasonable range rather than relying on a single formula's number.
Compare to your current weight
See how far your current weight is from commonly cited healthy-weight estimates.
Understand formula differences
See how different long-standing medical formulas can vary in their estimate.
Frequently asked questions
None is definitively "correct" — they're all decades-old clinical estimates (Devine, Robinson, Miller, and Hamwi), originally created for drug-dosing calculations, not as fitness targets. Treat the average as a rough reference point, not a strict goal.