For someone 5 feet 9 inches tall (175.3 cm), a healthy weight is 56.8 to 76.5 kg by the WHO BMI range, or up to 70.3 kg by the Asian range used in India. Ideal body weight averages 70 kg for a man and 65 kg for a woman.
| Weight (kg) | Weight (lb) | BMI | WHO category | Asian category |
|---|---|---|---|---|
| 49.1 kg | 108 lb | 16 | Underweight | Underweight |
| 52.2 kg | 115 lb | 17 | Underweight | Underweight |
| 56.8 kg | 125 lb | 18.5 | Healthy | Healthy |
| 61.4 kg | 135 lb | 20 | Healthy | Healthy |
| 64.5 kg | 142 lb | 21 | Healthy | Healthy |
| 67.6 kg | 149 lb | 22 | Healthy | Healthy |
| 70.6 kg | 156 lb | 23 | Healthy | Overweight |
| 73.7 kg | 163 lb | 24 | Healthy | Overweight |
| 76.8 kg | 169 lb | 25 | Overweight | Obese |
| 79.9 kg | 176 lb | 26 | Overweight | Obese |
| 84.5 kg | 186 lb | 27.5 | Overweight | Obese |
| 92.1 kg | 203 lb | 30 | Obese | Obese |
| 99.8 kg | 220 lb | 32.5 | Obese | Obese |
| 107.5 kg | 237 lb | 35 | Obese | Obese |
| 122.9 kg | 271 lb | 40 | Obese | Obese |
At 5 feet 9 inches, overweight starts at 76.8 kg (WHO) or 70.6 kg (Asian cut-off), and obesity at 92.1 kg (WHO) or 76.8 kg (Asian).
| Formula | Man | Woman |
|---|---|---|
| Devine (1974) | 70.7 kg (156 lb) | 66.2 kg (146 lb) |
| Robinson (1983) | 69.1 kg (152 lb) | 64.3 kg (142 lb) |
| Miller (1983) | 68.9 kg (152 lb) | 65.3 kg (144 lb) |
| Hamwi (1964) | 72.3 kg (159 lb) | 65.3 kg (144 lb) |
| Average of the four | 70.2 kg (155 lb) | 65.3 kg (144 lb) |
Ideal body weight (IBW) formulas were designed for medicine doses, not as a target, and they ignore frame size and muscle. Use them alongside the healthy BMI range.
Keep your waist under half your height: under 88 cm (34.5 inches) at 5'9". Waist-to-height ratio predicts heart and diabetes risk better than BMI alone, especially for South Asian adults.
| Waist-to-height | Waist at 5'9" | Meaning |
|---|---|---|
| Under 0.4 | under 70 cm | May be too slim |
| 0.4 – 0.49 | 70–86 cm | Healthy |
| 0.5 – 0.59 | 88–103 cm | Increased risk |
| 0.6 or more | 105 cm or more | High risk |
A healthy weight for a woman 5 feet 9 inches tall is 57–76 kg (BMI 18.5–24.9), or 57–70 kg for Asian women. Ideal body weight formulas give 64–66 kg.
A healthy weight for a man 5 feet 9 inches tall is 57–76 kg (BMI 18.5–24.9), or 57–70 kg for Asian men. Ideal body weight formulas give 69–72 kg.
At 175 cm, aim for 57–76 kg. Above 77 kg is overweight by WHO standards (71 kg by Asian standards).
5 feet 9 inches is 175.3 cm (69 inches × 2.54).