Ideal weight formulas
All formulas below estimate ideal weight based on height. They were originally in imperial units; we convert to metric automatically.
Devine formula (1974)
Female: 45.5 + 2.3 × (height in inches − 60)
Robinson formula (1983)
Female: 49 + 1.7 × (height in inches − 60)
Miller formula (1983)
Female: 53.1 + 1.36 × (height in inches − 60)
Hamwi formula (1964)
Female: 45.5 + 2.2 × (height in inches − 60)
Frequently asked questions
Is there one "correct" ideal weight?
No. Ideal weight is a range, not a single number. Body composition, muscle mass, bone density, and genetics all play a role. The formulas provide estimates — use them as reference points alongside BMI and body fat percentage.
Why does my ideal weight differ from what I feel comfortable at?
These formulas are population averages. Athletes, people with large frames, or those with significant muscle mass may be healthy at weights above these estimates. Personal comfort, energy levels, and health markers matter more than hitting a specific number.
Do these formulas work for very tall or very short people?
They are most accurate for heights between 152 cm (5'0") and 193 cm (6'4"). At extreme heights, the formulas become less reliable. The healthy BMI range (18.5–24.9) may be a better guide for people at the extremes.