Most forward facing car seats have a weight limit of between 40 and 80 pounds, with a height limit of around 44 inches. However, it is important to consult the manufacturer's specifications before making a purchase.
Once your child has outgrown the height or weight limit of their forward-facing car seat, they should switch to a booster seat. A good forward facing car seat is essential when it comes to transporting your kid safely in a vehicle and ensuring that you give them the best chance at surviving an accident without sustaining serious injuries.
When switching from rear-facing to front-facing, there should be at least an inch (measured vertically) between the top of your child’s head and the top edge of any restraint surface, such as a headrest or vehicle seat.