For someone 6 feet 3 inches tall (190.5 cm), a healthy weight is 67.1 to 90.4 kg by the WHO BMI range, or up to 83.1 kg by the Asian range used in India. Ideal body weight averages 83 kg for a man and 77 kg for a woman.
| Weight (kg) | Weight (lb) | BMI | WHO category | Asian category |
|---|---|---|---|---|
| 58.1 kg | 128 lb | 16 | Underweight | Underweight |
| 61.7 kg | 136 lb | 17 | Underweight | Underweight |
| 67.1 kg | 148 lb | 18.5 | Healthy | Healthy |
| 72.6 kg | 160 lb | 20 | Healthy | Healthy |
| 76.2 kg | 168 lb | 21 | Healthy | Healthy |
| 79.8 kg | 176 lb | 22 | Healthy | Healthy |
| 83.5 kg | 184 lb | 23 | Healthy | Overweight |
| 87.1 kg | 192 lb | 24 | Healthy | Overweight |
| 90.7 kg | 200 lb | 25 | Overweight | Obese |
| 94.4 kg | 208 lb | 26 | Overweight | Obese |
| 99.8 kg | 220 lb | 27.5 | Overweight | Obese |
| 108.9 kg | 240 lb | 30 | Obese | Obese |
| 117.9 kg | 260 lb | 32.5 | Obese | Obese |
| 127 kg | 280 lb | 35 | Obese | Obese |
| 145.2 kg | 320 lb | 40 | Obese | Obese |
At 6 feet 3 inches, overweight starts at 90.7 kg (WHO) or 83.5 kg (Asian cut-off), and obesity at 108.9 kg (WHO) or 90.7 kg (Asian).
| Formula | Man | Woman |
|---|---|---|
| Devine (1974) | 84.5 kg (186 lb) | 80 kg (176 lb) |
| Robinson (1983) | 80.5 kg (177 lb) | 74.5 kg (164 lb) |
| Miller (1983) | 77.4 kg (171 lb) | 73.5 kg (162 lb) |
| Hamwi (1964) | 88.5 kg (195 lb) | 78.5 kg (173 lb) |
| Average of the four | 82.7 kg (182 lb) | 76.6 kg (169 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 95 cm (37.5 inches) at 6'3". Waist-to-height ratio predicts heart and diabetes risk better than BMI alone, especially for South Asian adults.
| Waist-to-height | Waist at 6'3" | Meaning |
|---|---|---|
| Under 0.4 | under 76 cm | May be too slim |
| 0.4 – 0.49 | 76–93 cm | Healthy |
| 0.5 – 0.59 | 95–112 cm | Increased risk |
| 0.6 or more | 114 cm or more | High risk |
A healthy weight for a woman 6 feet 3 inches tall is 67–90 kg (BMI 18.5–24.9), or 67–83 kg for Asian women. Ideal body weight formulas give 74–80 kg.
A healthy weight for a man 6 feet 3 inches tall is 67–90 kg (BMI 18.5–24.9), or 67–83 kg for Asian men. Ideal body weight formulas give 77–89 kg.
At 191 cm, aim for 67–90 kg. Above 91 kg is overweight by WHO standards (83 kg by Asian standards).
6 feet 3 inches is 190.5 cm (75 inches × 2.54).