Ideal Weight Calculator
Estimate an ideal body weight range using four published medical formulas.
How to Use the Ideal Weight Calculator
- Select gender and enter your height.
- Four different published formulas' estimates appear instantly.
Frequently Asked Questions
Which formulas does this use?
The Devine, Robinson, Miller, and Hamwi formulas — four different published medical formulas from the 1960s–80s that are still commonly referenced today, each with a slightly different result since they were derived from different population studies.
Why do the formulas give different results?
Each was developed independently, often originally for medical dosing calculations rather than general fitness, using different reference populations — the spread between them is a useful reminder that "ideal weight" is an estimate, not a precise medical target.
Is this a substitute for medical advice?
No — these formulas don't account for muscle mass, body composition, frame size, or individual health conditions. Use this as a general reference point only, not a diagnosis or medical recommendation.
Is my information sent anywhere?
No — the calculation happens entirely in your browser using JavaScript, so nothing you enter is ever sent to a server.