Is 172 cm ok for 13 yr old?

Yes, 172 cm is okay for a 13-year-old. According to the World Health Organization (WHO), the average height for a 13-year-old boy is between 153 cm and 170 cm, while the average height for a 13-year-old girl is between 151 cm and 166 cm. Therefore, 172 cm is within the normal range for both boys and girls of that age.