Ideal Weight Calculator
Estimate a healthy target weight for your height using several established formulas so you can see a sensible range rather than a single number. Enter your height and sex and the calculator shows the ideal body weight from the Devine, Robinson and Hamwi equations, which doctors have used for decades, together with the weight range that corresponds to a normal BMI for your height. Because these formulas were built for different purposes they give slightly different answers, and viewing them side by side gives a more realistic sense of a healthy target. Ideal weight is a rough guide that ignores build, muscle and frame size, so treat it as a reference point, not a strict goal. Everything is computed locally in your browser.
How to use Ideal Weight Calculator
- Select your sex.
- Enter your height.
- Read the Devine, Robinson and Hamwi target weights.
- Compare against the healthy BMI range shown.
Frequently asked questions
Which formulas does it use?
It shows target weights from the Devine, Robinson and Hamwi formulas, plus a healthy range derived from BMI.
Why do the formulas give different numbers?
Each formula was derived from different data and assumptions, so they produce slightly different targets. Together they give a sensible range rather than one exact figure.
What inputs does it need?
It uses your height and sex. Ideal body weight formulas are based primarily on height.
What is Ideal Weight Calculator?
Estimate a healthy target weight for your height using several established formulas so you can see a sensible range rather than a single number. Enter your height and sex and the calculator shows the ideal body weight from the Devine, Robinson and Hamwi equations, which doctors have used for decades, together with the weight range that corresponds to a normal BMI for your height.
Is Ideal Weight Calculator free to use?
Yes. Ideal Weight Calculator is completely free, with no sign-up and no usage limits.
Does Ideal Weight Calculator work in a web browser?
Yes. Ideal Weight Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Ideal Weight Calculator?
Yes. Ideal Weight Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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