Three published ideal-body-weight formulas — Devine, Robinson, and Miller — computed from your height and sex, presented as a range rather than a single "perfect" number.
How it works
- Select your biological sex.
- Input your height.
- The tool calculates clinical IBW formulas to show you an ideal weight range.
Frequently asked questions
Why do the formulas disagree?
They were fit to different datasets and purposes. The spread between them is a healthy reminder that "ideal" is a range.
Is ideal weight the same as healthy weight?
Not exactly — body composition, frame, and health markers matter more than any single formula output.
Which should I trust?
Use the range. If a goal weight falls inside it and feels sustainable, that is a reasonable target to discuss with a professional.