Ideal Weight Range Calculator
Compare two historical height-based weight formulas side by side.
Compare height-based weight estimates
Ideal weight formulas are blunt instruments, but they still appear in calculators, clinical references, and older planning documents. This tool compares two common formulas instead of presenting one number as truth: Devine and Robinson. Both start with a base weight at five feet tall and add a fixed amount for each additional inch.
For example, a 70 inch male estimates about 73 kg by Devine and 71 kg by Robinson, while a 66 inch female estimates about 59 kg by Devine and 59.2 kg by Robinson. The range shows how formula choice changes the answer.
Read the range as context, not a target
These formulas do not know body composition, frame size, age, training history, or medical needs. They are useful for comparing old reference numbers, not for deciding what someone should weigh. The calculator keeps the formulas visible and processes the height locally. Showing both kilograms and pounds also helps compare sources that use different units.
Frequently Asked Questions
Which formulas does this ideal weight calculator use?
It compares the Devine and Robinson formulas, both based on sex and inches over five feet.
Is the result a medical goal weight?
No. These formulas are historical estimates and do not include muscle mass, frame size, age, ethnicity, or personal health context.
Why show a range instead of one number?
The two formulas often differ, so the range makes that uncertainty visible instead of pretending there is one exact ideal weight.
Are my measurements uploaded?
No. Height and selected formula inputs are calculated locally in your browser.
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