BMI for 171 cm and 50 kg
A person 171 cm (5'7") tall weighing 50 kg (110 lbs) has a BMI of 17.1 — classified as Underweight. The healthy weight range for this height is 54.1–72.8 kg.
Your BMI
17.1
Category
Underweight
Under 18.518.5–24.925–29.930+
Healthy weight range: 54.1–72.8 kg
What does this BMI mean?
A BMI of 17.1 sits in the Underweight range under the standard WHO adult classification. This range is associated with nutritional gaps for some people. If unintentional, a check-up and dietary review are sensible.
For someone 171 cm tall, weights between 54.1 kg and 72.8 kg fall in the BMI 18.5–24.9 normal range. That's roughly 119–161 lbs.
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Last updated: 2026