BMI for 50 kg at 170 cm tall
A person weighing 50 kg at 170 cm has a BMI of 17.3, classed as underweight. Healthy weight range for this height: 53.5–72.0 kg.
BMI 17.3 — Underweight
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Full breakdown
| BMI | 17.3 |
| Category (WHO) | Underweight |
| Healthy weight at 170 cm | 53.5 – 72.0 kg |
| Weight in pounds | 110.2 lb |
| Height in feet/inches | 5 ft 6.9 in |
Step-by-step working
- Convert height to metres: 170 cm ÷ 100 = 1.70 m
- Square the height: 1.70² = 2.8900 m²
- Divide weight by height²: 50 ÷ 2.8900 = 17.3
BMI = weight (kg) ÷ height (m)²
Try your own numbers with the BMI Calculator.