Ideal Weight Calculator
Estimate a healthy target weight range for your height using three established formulas, plus the NHS healthy BMI range, metric or imperial.
Not medical advice. This ideal weight calculator is for general information only and is not medical advice, speak to your GP about a healthy weight for you.
Enter your height
Your ideal weight range appears here as you type.
How ideal weight is calculated
There's no single 'correct' ideal weight, this calculator shows three long-established clinical formulas side by side, plus the NHS healthy BMI range, so you can see the spread. The Devine formula (1974) is the most widely used in clinical dosing; the Robinson (1983) and Miller (1983) formulas are later refinements. All three start from a base weight for 5 feet of height and add a fixed amount per inch above that, with separate figures for men and women. None of them account for muscle mass, frame size, bone density or individual body composition, a muscular or large-framed person may sit well outside these ranges and still be perfectly healthy. Treat the result as a general guide, not a target you must hit, and speak to your GP or a registered dietitian about what's right for you.
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