Best Convertible Car Seat for Tall Babies

Do you have a baby who keeps going through growth spurts? Maybe being tall runs in your family and you now have a taller than average baby. Having a tall baby who can climb larger steps or reach playground equipment can be a lot of fun. However, having a taller baby means you’ll need a car seat that is equipped to handle their height. Learn more about finding the right car seat for your baby.

Rear-Facing Car Seats

According to research, babies should sit rear-facing as long as possible because it better protects them from crash forces. Rear-facing seats distribute crash forces more equally throughout the seat and keep your child’s head and spine aligned in a car accident. The American Academy of Pediatrics recommends children sit rear-facing until they are at least two years old and longer if at all possible.

Every car seat has height limitations, though. If you have a taller baby, they may outgrow their rear-facing car seat sooner than you’d like. If they have long legs, they may not comfortably sit rear-facing as long as they need to. Therefore, it is important to select a car seat that accommodates their height so they can sit rear-facing as long as possible. This is where convertible car seats come into play.

Convertible Car Seats

Once your baby outgrows an infant carrier, the only other type of car seat that allows your baby to sit rear-facing is a convertible car seat. Convertible car seats can also be placed forward-facing and are usually made to accommodate children between the ages of six months and four years. Some can accommodate even older children depending on their features. Some also accommodate younger babies with infant inserts or body pillows. Convertible car seats always hold your child in a five-point harness. These seats usually hold rear-facing children up to at least 40 pounds and forward-facing children up to at least 65 pounds. Many of them accommodate children up to a maximum of 40-50 inches tall.

Recommended Car Seats for Tall Babies

Some convertible car seats are better than others for taller babies. The car seats listed below will give your taller child room to grow.

Diono Rainier All-In-One Convertible Car Seat

The Diono Rainier has higher than average rear-facing height and weight limits than other car seats. This car seat allows you to face your child backward for up to 44 inches and 50 pounds and face them forward in a five-point harness up to 57 inches and 90 pounds. It converts to a high-back booster for older children. It is a great choice for babies who are heavier, taller, or both.

The Rainier has a full steel frame, making it one of the most durable car seats you can find. It also has one of the narrowest frames on the market. Because it is so slender, it is one of the only car seats that can be placed side-by-side in the back seat. Most vehicles can fit three of these car seats across the back seat.

The Diono Rainier has a 12-position head support to give your child the best and most comfortable fit. The interior of the seat is spacious and padded with plush materials. This car seat conveniently folds flat and is easy to travel with or carry around. It is also approved by the Federal Aviation Administration (FAA) for flying, so your child can ride in it on an airplane. The Rainier comes with infant body support cushions and memory foam, allowing you to use it from birth through childhood. With its multiple seating modes and 10 years of life, this seat might be the only one you’ll ever have to buy.

Clek Fllo

The Clek Fllo is another convertible car seat with high rear-facing height and weight limits. This seat can rear-face a child up to 43 inches and 50 pounds and forward-face a child up to 49 inches and 65 pounds in a five-point harness. It also comes with an infant insert, so you can use the seat from birth through your child’s preschool days.

With a width of only 17 inches, it is one of the narrowest car seats on the market, making it an easy seat to fit into any vehicle. While the seat is slim, it is also safe. It features a steel anti-rebound bar, helping limit the impact to your child’s head in the event of a collision. The seat is also FAA approved so your child can ride on it in an airplane. You can also purchase a travel bag to carry the car seat around in, as well as a cup holder for your child to keep drinks and snacks close by. If you have a larger baby and a small vehicle, this is the car seat for you.

Britax Marathon

Britax is known for selling car seats that have some of the highest maximum height limits on the market. The Britax Marathon is perfect for even the tallest babies. It can hold a rear-facing child up to 49 inches and 40 pounds and a forward-facing child up to 49 inches and 65 pounds. This car seat has a 10-position, quick adjust harness as well as two buckle positions. This allows the seat to comfortably grow with your child without having to constantly re-thread the harness belts. The seat comes with a body pillow for smaller babies, so it can be used for infants as well.

The Marathon is another narrow car seat at only 18.5 inches wide. It is one of the easiest car seats to install as it uses a latch system. It has built-in lock-offs to ensure the seat stays in its position on your vehicle’s seat. It also has three recline positions, so you can find the best angle to install the seat. With seven years of life, this car seat will last your child through their preschool years. They will likely outgrow it before you have to replace it even if they are a taller child.


Graco Extend2Fit

The Graco Extend2Fit is another car seat with higher than average height limits. It allows your child to sit rear-facing up to 45 inches and 50 pounds. They can sit forward-facing up to 49 inches and 65 pounds. The Extend2Fit encourages your child to sit rear-facing as long as possible. It comes with a way to adjust the extension panel so you can give your child an extra 5 inches of leg space, helping taller children with long legs stay comfortable. The extra leg room is also helpful for giving children more space in smaller vehicles.

The Extend2Fit has a system so you can easily adjust the height and headrest as your child grows. This car seat also has two cup holders, so your child can keep drinks and snacks close by. The Extend2Fit lasts up to 10 years, so your child will grow out of it before it expires. If you have multiple children, it has enough lifespan that you could pass it down from one child to another.


If you have a taller baby, you shouldn’t worry. There are several car seat options available that accommodate larger children. You should always look at the maximum rear-facing height limits to ensure you buy something your child can rear-face in for a long time. If your child is both tall and heavy, you will also need to look at weight maximums. The Diono Rainier, for instance, is a great option for a child that is both tall and heavy. The Britax Marathon is a great option for a child who is mostly just tall but not that heavy.

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