There is no single ideal weight — it depends on height, frame size, age, sex and body composition. Multiple formulas give ranges, which is more honest than a single number.
Ideal Weight Ranges by Height (Women, Metric)
| Height | BMI Range (18.5–24.9) | Devine Formula |
|---|---|---|
| 155 cm (5'1") | 44–60 kg | 49 kg |
| 160 cm (5'3") | 47–64 kg | 50.5 kg |
| 165 cm (5'5") | 50–68 kg | 52 kg |
| 170 cm (5'7") | 54–72 kg | 54 kg |
| 175 cm (5'9") | 57–76 kg | 56 kg |
Ideal Weight Ranges by Height (Men, Metric)
| Height | BMI Range (18.5–24.9) | Devine Formula |
|---|---|---|
| 165 cm (5'5") | 50–68 kg | 62 kg |
| 170 cm (5'7") | 54–72 kg | 65 kg |
| 175 cm (5'9") | 57–76 kg | 68 kg |
| 180 cm (5'11") | 60–81 kg | 71 kg |
| 185 cm (6'1") | 63–85 kg | 74 kg |
Why the Range Matters More Than a Single Number
Within the same height, people naturally carry different amounts of muscle and bone. A lean, muscular person and a sedentary person of the same height can have identical BMIs with very different body compositions. The BMI range (18.5–24.9) spans roughly 20kg for most heights — use the full range, not just the midpoint.
Which Formula Is Most Accurate?
The BMI-based range (18.5–24.9) is the most validated against health outcomes. The Devine formula gives a single "target" number that was originally developed for drug dosing — not weight goals. Robinson and Hamwi formulas are variants with slightly different constants. All give estimates; none is a prescription.
Find your healthy weight range for your height.
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