What is the weight for a child to not need a booster seat?

In the United States, children typically do not need a booster seat once they reach a weight of 40 to 80 pounds, depending on state regulations. However, it is also essential to consider their age, height, and the specific guidelines of their car seat manufacturer. Generally, children should use a booster seat until they are about 4 feet 9 inches tall and between 8 to 12 years old to ensure the seatbelt fits properly. Always refer to local laws and safety recommendations for the most accurate guidelines.