Ideal Weight Calculator
Estimate a healthy or "ideal" body weight based on height and gender using several well-known formulas, along with the healthy BMI range.
| Age | years (2+) |
| Gender | |
| Height |
Result
Your ideal weight estimates will appear here.
About these formulas
Different formulas give different answers because "ideal" weight depends on body composition, not just height. The healthy BMI range (18.5–25) is shown as a practical reference for most adults. Formulas based on 5 feet (152.4 cm) are less meaningful for very short heights.
How it works
“Ideal weight” formulas estimate a reference weight from height (and sometimes sex). Different formulas give different results; there is no single perfect number.
Common formulas
- Includes formulas such as Devine, Robinson, Miller, Hamwi (each derived differently). Results are shown as estimates/ranges where provided.
Assumptions
- These do not account for muscle mass, body composition, age, or individual health. Use as a rough reference, not a target for everyone.
General information only, not medical advice.
How to use the Ideal Weight Calculator
It takes a few seconds, and every figure is calculated in your browser.
- Enter your age.
- Select your gender.
- Enter your height.
- Press Calculate — the result appears in the dark panel beside the form.
- Use Copy, CSV, Share or Print under the result if you want to keep it.
Ideal Weight Calculator — frequently asked questions
What formula does the Ideal Weight Calculator use?
Different formulas give different answers because "ideal" weight depends on body composition, not just height. The healthy BMI range (18.5–25) is shown as a practical reference for most adults. Formulas based on 5 feet (152.4 cm) are less meaningful for very short heights.
How does the Ideal Weight Calculator work?
“Ideal weight” formulas estimate a reference weight from height (and sometimes sex). Different formulas give different results; there is no single perfect number.
What assumptions and limitations should I know about?
These do not account for muscle mass, body composition, age, or individual health. Use as a rough reference, not a target for everyone.
Last updated 10 November 2026 · Formula, worked example and assumptions are documented above, and every result is calculated in your browser.