Compare four classic ideal-body-weight formulas plus the healthy BMI weight range for your height. Enter your details below — the calculation runs entirely in your browser.
Frequently asked questions
Why are there different formulas?
The Devine, Robinson, Miller, and Hamwi equations were developed for different purposes (originally medication dosing and insurance tables) and give slightly different numbers. There is no single "ideal" weight — the healthy BMI range shown alongside them spans roughly 18.5–24.9 BMI and is the range most clinicians reference today.
Should I target my formula result?
Not necessarily. These equations predate modern body-composition research and do not account for muscle mass, age, or frame size. Use them as rough reference points, and discuss personal targets with a healthcare professional.
This calculator provides estimates for informational and educational purposes only. It is not medical advice and does not diagnose or treat any condition. Consult a qualified healthcare professional before starting any diet, exercise, or weight-management program.