Ideal Weight Calculator
Four common formulas, side-by-side. They mostly agree within a few pounds. "Ideal" is statistical, not personal — read the notes below before taking any one number too seriously.
Results
Hamwi (1964)
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Devine (1974)
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Robinson (1983)
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Miller (1983)
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Healthy BMI range (18.5–25)
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These formulas have limits
All four were developed for clinical medication dosing, not weight-loss goals. They're based on population statistics from decades ago, weight only a single number, and don't account for muscle mass, frame size, or body fat percentage.
The BMI range at the bottom is a more honest answer: a healthy weight is a band, not a single number. If you fall inside it, you're fine. If you fall outside, the question is why (muscle vs fat, where the fat sits), not "by how much."
Estimate — not medical advice
The numbers here are estimates built on population averages and published formulas. Any individual can sit well away from the average, so treat the output as a rough guide rather than a measurement of you specifically. It isn't a medical assessment, and it can't account for your history, medications, or anything a clinician would notice.