BMI for 164 cm and 45 kg
A person 164 cm (5'5") tall weighing 45 kg (99 lbs) has a BMI of 16.7 — classified as Underweight. The healthy weight range for this height is 49.8–67.0 kg.
Your BMI
16.7
Category
Underweight
Under 18.518.5–24.925–29.930+
Healthy weight range: 49.8–67.0 kg
What does this BMI mean?
A BMI of 16.7 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 164 cm tall, weights between 49.8 kg and 67.0 kg fall in the BMI 18.5–24.9 normal range. That's roughly 110–148 lbs.
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Last updated: 2026