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Ideal weight formulas were originally developed for clinical settings to estimate appropriate drug dosages. The Devine formula (1974) is most widely cited, while Robinson (1983) and Miller (1983) offer alternatives. All formulas use height in inches as the primary input. Frame size can shift your personal target within the range. These are estimates — individual body composition, muscle mass, and health status all matter.
Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.
Why do the formulas give different results?
Each formula was derived from different population studies with different methodologies. The range between them represents normal individual variation.
Is the ideal weight the same as healthy weight?
Not necessarily. The ideal weight from these formulas is a clinical estimate. Healthy weight is better assessed using BMI range or body fat percentage alongside medical evaluation.
Does frame size matter?
Yes. People with larger frames naturally carry more muscle and bone mass, so the upper end of the range is more appropriate for them.
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