| | Diet Nutrition | Weight Watchers How much does a six year old weigh? This depends on the child's height, gender, and overall build. On average, a six year old weighs between 40 to 50 pounds, but this can vary widely. Weight Watchers - Related Articles What does a Radiologist do on daily basis? How do you avoid dandruff? Radiation Treatment Complications Checklist for Emergency Food Storage What is the correct to remove hospital gloves? Steps for Gastric Banding Surgery Surgeries to Lose Weight