Ideal Weight Calculator
Estimate a healthy reference weight for your height using the Devine formula, with a range around it.
Enter your details below.
How to use
- Enter your height in centimetres.
- Select Male or Female.
- Read your ideal reference weight and its range.
About this tool
The Devine formula gives a reference weight based on height alone: a base weight for a five-foot person, plus a fixed amount for each inch above five feet, with different base values for men and women. This tool also shows a range ten percent either side of that figure, because healthy weights vary widely. The result is general information only, not medical advice, and it ignores build, muscle, and age.
Frequently asked questions
Is this my only healthy weight?
No — it is a reference point, not a rule. Many healthy people sit well outside it, especially if they are muscular or slight of build.
What if I am under five feet tall?
The formula still works mathematically, subtracting for inches below five feet, but the result is less meaningful at very short heights.