Use this calculator to determine whether a child is at a healthy weight for his/her height, age and sex. The BMI-percentile-for-age calculator automatically adjusts for differences in height, age and ...
The average weight for a 13-year-old boy is between 75 and 145 pounds, while the average for a 13-year-old girl is between 76 and 148 pounds. A child’s weight can depend on unique factors. For boys, ...
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