How much should a 5ft6 13year old weigh?

The healthy weight for your height should be around 50.8kg to 61.9kg

If your weight is around 45.2kg to 50.7kg, your at borderline underweight

If your weight is around 45.1kg & below, your underweight

If your weight is around 62kg to 67.4kg,your at borderline overweight

If your weight is around 67.5kg to78.7kg,your overweight

If your weight is around 78.8kg & above,your severely overweight

I hope this helped you (: !