What is the height your child has to be to not sit in a booster seat?

In general, children can transition out of a booster seat when they reach a height of 4 feet 9 inches (145 cm) and are typically between ages 8 and 12. However, it's important that the vehicle's seat belt fits properly, with the lap belt laying snugly across the upper thighs and the shoulder belt crossing the chest and shoulder. Always refer to your local laws and safety guidelines, as requirements may vary by region.