How much should a four year old weight?

The average weight for a four-year-old child is between 35 and 40 pounds (16 to 18 kilograms). However, it's important to note that every child is different, and some may be outside this range while still being perfectly healthy. Factors that can affect a child's weight include genetics, height, activity level, and diet. If you have any concerns about your child's weight, it's best to talk to your doctor.