12 Best Convertible Car Seats for Tall Babies (Spacious)

As a mom, you want to keep your baby safe while driving. A rear-facing seat is the best option, but you want your tall baby to be comfortable and safe.

The best convertible car seat for tall babies will have extended leg room, high weight and height limit, and great safety features.

Our Favorites

nuna car seat

Best for Tall Babies
Nuna Exec

clek foonf

Best Non-Toxic
Clek Foonf

diono car seats

Best 3 Across
Diono Radian 3QXT

Best Convertible Car Seats for Tall Babies

1. Nuna Exec Tall Toddler Car Seat

This is the best car seat for tall baby because it is taller than the previous version and gives your baby more space.

This is a car seat with extra legroom because the adjustable anti-rebound panel gives extended legroom and leg support.

This tall car seat gives your baby 2.5 inches more space and allows you to configure the seat in the best way for your seat and your tall baby.

With 12 positions of harness height and 2 crotch buckle positions, this seat will keep your big baby comfortable at every stage.

What We Liked

  • No-rethread harness
  • Magnetic harness holders
  • GOTS cotton insert
  • Naturally flame-retardant
  • Ventilation panels in the shell

What Can Be Improved

  • Strap covers are prone to coming off
  • The booster function is not long-lasting
  • The TrueTension system is not considered a lock off

Height Limit: Up to 57 in (145cm)
Rear-Facing Weight: 5-50 lbs (2.3-23 kg)
Forward-Facing Weight: 25-120 lbs (11.3-54 kg)
Seat Weight: 26.6 lbs (12.1 kg)
Dimensions: 26-33 H x 18.5 W x 22.5 L in
Expiration Date: 10 years from the manufacturing date

2. Clek Foonf Convertible Tall Baby Car Seat

With new colors and fabrics, an upgrade from the past version, your tall baby can enjoy extended rear-facing in style.

The best convertible car seats for tall babies have a rear-facing weight limit of 50 lbs.

This tall baby car seat has an adjustable, structural headrest so you can keep your baby safe.

The deep side wings give your tall baby more room, and the 5-point harness grows with your baby.

The smooth recline feature keeps your big baby comfortable as they grow by providing the right angle and enough legroom.

A drawback is that this seat is only suitable for infants with a separate insert.

What We Liked

  • Narrow design for putting 3 seats across
  • Rigid LATCH installation is quick and easy
  • Steel anti-rebound bar for added safety
  • No brominated and chlorinated flame retardants
  • Easy access belt path when rear-facing

What Can Be Improved

  • Doesn’t have a no-rethread harness
  • It is high on the base when rear-facing
  • Heavy

Height Limit: Up to 49 in (124.5cm)
Rear-Facing Weight: 14-50 lbs (6.4-23 kg)
Forward-Facing Weight: 22-65 lbs (10-29.5 kg)
Seat Weight: 33 lbs (15 kg)
Dimensions: 28 H x 17 W x 16 L in
Expiration Date: 9 years from the manufacturing date

3. Diono Radian 3QXT Latch All-in-One Convertible Car Seat for Tall babies

The Radian 3QXT is a car seat with extended leg room, which is an improvement from the prior model. The adjustable calf support is great for your tall child when they are forward-facing.

With extended rear-facing, the 3QXT is a great infant car seat for tall babies. This seat adapts as your child grows, so they are comfortable at every stage, weight, and height.

The 12-position headrest makes this a good convertible car seat for a tall child, and the extendable hip flaps give your baby more space.

Although it can be tricky to install, it is worth it to have a seat that fits a wide weight range.

What We Liked

  • High-quality fabric covers
  • Machine washable cover
  • Memory foam seat
  • 8 layers of side impact protection
  • Steel alloy frame for extra safety

What Can Be Improved

  • Short buckle strap
  • Angle adjustor not included
  • Hard to put the cover back on

Height Limit: Up to 57 in (145cm)
Rear-Facing Weight: 4-50 lbs (1.8-22.7 kg)
Forward-Facing Weight: 22-120 lbs (10-54 kg)
Seat Weight: 32 lbs (14.5 kg)
Dimensions: 28.5 H x 17 W x 16 L in
Expiration Date: 10 years from the manufacturing date

4. Chicco NextFit Max Zip Air Extended Convertible Car Seat

This is the best convertible car seat for big babies because it has 25% more legroom rear-facing and calf support forward-facing.

This extra space is an upgrade from the earlier model. The NextFit Max is a car seat for tall toddler extended rear-facing up to 50 lbs. 

The recline angle indicator helps you find the position for your tall baby, and the 9-position headrest automatically raises with the harness, so your tall baby is always safe and comfortable.

The seat is quite heavy and bulky, but the 2-position chest clip and extra space make it a great big baby car seat.

What We Liked

  • Easy to install correctly with helpful indicators
  • SuperCinch and LockSure give a secure installation
  • DuoGuard offers a deep, rigid shell that is comfortable and safe
  • Dishwasher-safe cupholders for easy cleaning
  • Easy to remove the cover

What Can Be Improved

  • The release button is hidden under the fabric
  • Straps could be longer
  • Doesn’t work well with leather seats

Height Limit: Up to 49 in (124.5cm)
Rear-Facing Weight: 4-50 lbs (1.8-22.7 kg)
Forward-Facing Weight: 22-65 lbs (10-29.5 kg)
Seat Weight: 26.5 lbs (12 kg)
Dimensions: 22.75 H x 19 W x 20 L in
Expiration Date: 8 years from the manufacturing date

5. Diono Radian 3RXT Safe+ Convertible Big Baby Car Seat

This is one of the best car seats for tall toddlers.

A change since the last version is the adjustable headrest that has 12 positions for tall babies.

With the option of having your baby rear-facing until 50 lbs, this makes the list of the best car seat for big babies.

The 5-point adjustable harness allows you to find the best and safest fit for your tall baby, whether rear or forward-facing.

Installation can be difficult, but it is a small price to pay for a seat with a good height limit and generous room for the legs.

What We Liked

  • High-quality fabric covers
  • Machine-washable covers
  • Fantastic safety features
  • Narrow but spacious
  • Good value for money

What Can Be Improved

  • Passenger leg room in the front is limited
  • The open back is unattractive
  • The seat is heavy

Height Limit: Up to 57 in (145cm)
Rear-Facing Weight: 4-50 lbs (1.8-22.7 kg)
Forward-Facing Weight: 22-120 lbs (10-54 kg)
Seat Weight: 30.6 lbs (13.9 kg)
Dimensions: 28.5 H x 17 W x 16 L in
Expiration Date: 10 years from the manufacturing date

6. Diono Radian 3RX Convertible Tall Child Car Seat

The best car seat for tall toddler options has extended rear-facing like the 3RX.

This seat has a 12-position headrest compared to the previous version allowing you to have it adjusted for taller babies.

The infant head support liner keeps your taller baby secure and in the correct position.

The adjustable 5-point harness means that your large baby can be comfortable and safe at all times.

Something to consider is this seat can be hard to install rear-facing because of its height, but this does give your taller baby more space.

What We Liked

  • Machine washable
  • Steel-reinforced cup holder
  • Safety and comfort prioritized
  • The low profile and shallow sides make it versatile
  • 3 color options

What Can Be Improved

  • It could have more padding
  • It can be tricky to tighten
  • You have to manually re-thread the straps

Height Limit: Up to 57 in (145cm))
Rear-Facing Weight: 5-50 lbs (2.3-23 kg)
Forward-Facing Weight: 22-120 lbs (10-54 kg)
Seat Weight: 28.1lbs (12.76 kg)
Dimensions: 28.5 H x 17 W x 16 L in
Expiration Date: 10 years from the manufacturing date

7. Clek Fllo Convertible Car Seat for Big Babies

Unlike previous versions, the Fllo sits low on the seat and has deep side wings that make for a spacious ride for your big baby.

With extended rear-facing, it is one of the best convertible baby seat for tall baby.

Tall car seats like the Fllo offer an adjustable, structural headrest that you can change to suit your big baby.

The anti-rebound bar gives your tall baby an extra 1-2 inches when rear-facing.

The adjustable crotch strap and 6 different harness heights make up for the fact that it can be tricky to fasten with the seat belt when forward-facing.

What We Liked

  • No nasty flame-retardant chemicals
  • Advanced side impact protection
  • Water0resistant fabric
  • Removable cushion for belt path access
  • Clean design that fits well with other seats

What Can Be Improved

  • No recline feature
  • The material could be better quality
  • Only suitable for newborns with an additional insert

Height Limit: Up to 49 in (124.5cm)
Rear-Facing Weight: 14-50 lbs (6.4-23 kg)
Forward-Facing Weight: 22-65 lbs (10-29.5 kg)
Seat Weight: 25 lbs (11.3 kg)
Dimensions: 31 H x 16.9 W x 13 L in
Expiration Date: 9 years from the manufacturing date

8. Diono Rainier 2AXT Prestige Latch All-in-One Convertible Car Seat

Tall babies need a car seat like the 2AXT Prestige that offers extended rear-facing.

It has a higher weight limit of 50 lbs when rear-facing. The extra deep side walls are an improvement from the previous model and give large babies extra space. 

Although it is heavy and quite bulky, it is worth it for expandable sides and a long seat bottom that gives your baby more space and support.

This seat has 5 shoulder and 3 buckle positions, so you can customize the fit for your tall baby. With a 12-position headrest, you can feel sure that your tall baby is comfortable and safe.

What We Liked

  • The seat base has comfortable memory foam
  • Slim design for 3 across set up
  • Rear-facing tether for added safety
  • Angled cupholders mean fewer spills
  • Super LATCH installation

What Can Be Improved

  • Installation can be tricky
  • Not stroller compatible
  • Very expensive

Height Limit: Up to 57 in (145cm)
Rear-Facing Weight: 5-50 lbs (2.7-23 kg)
Forward-Facing Weight: 20-120 lbs (9.1-54 kg)
Seat Weight: 31.3 lbs (14.2 kg)
Dimensions: 28.25 H x 17.75 W x 15.65 L in
Expiration Date: 10 years from the manufacturing date

9. Peg Perego Kinetic Convertible Tall Baby Car Seat

With improved kinetic pods, this convertible safety seat for tall baby has safely extended rear-facing capability.

This is the best car seat for tall babies because the anti-rebound bar spacer provides 2 inches of extra legroom.

The side impact protection also adjusts to different height positions to keep your tall baby safe.

The chest clip button can be difficult to open, but the no-rethread harness makes it easy to adjust as your baby grows.

This seat also has a 6-position recline so you can keep your big baby comfortable.

Your tall newborn will be snug and secure with the tri-stage cushion.

What We Liked

  • The fabric is easy to clean
  • EasyTight LATCH for simple installation
  • Top tether for added safety
  • The rebound bar folds down rather than having to be removed
  • Comfortable for large babies

What Can Be Improved

  • Recline mechanism gets stuck easily
  • The lever to release the harness strap is hidden
  • Cup holder placement is difficult for kids to reach

Height Limit: Up to 49 in (124.5cm)
Rear-Facing Weight: 5-45 lbs (2.3-20.4kg)
Forward-Facing Weight: 22-65 lbs (10-29.5 kg)
Seat Weight: 24.4 lbs (11.1 kg)
Dimensions: 25.75 H x 18.75 W x 26.25 L in
Expiration Date: 10 years from the manufacturing date

10. Nuna Rava Convertible Tall Car Seat

The Rava is the original Nuna convertible car seat. It is a great infant car seat for tall babies because it has laid-back legroom.

The adjustable footrest gives your tall baby 2 inches more space when rear-facing and offers extra support forward-facing.

It is the best car seat for tall 3-year-old with extended rear-facing up to 50 lbs.

It is a heavy seat to move around, but with a non-rethread harness, 10-position headrest, and 5 levels of recline, you can adjust the seat for your tall baby without taking it out of the car.

The 2 position crotch strap is ideal for big babies.

What We Liked

  • Ventilation panels in the shell
  • Dual flip-open cupholders
  • Greenguard Gold certified and safe for your baby
  • Easy to install
  • Convenient buckle holders

What Can Be Improved

  • Not great for preemies 
  • The buckle can be stiff
  • The seats get hot

Height Limit: Up to 49 in (124.5cm)
Rear-Facing Weight: 5-50 lbs (2.3-23 kg)
Forward-Facing Weight: 22-65 lbs (10-29.5 kg)
Seat Weight: 27.2 lbs (12.3 kg)
Dimensions: 25.2-31 H x 19 W x 16 L in
Expiration Date: 10 years from the manufacturing date

11. Diono Radian 3 R Latch Extended Rear-Facing Convertible Car Seat

This infant car seat for tall babies has been upgraded from earlier versions with extended rear-facing until 4 years old.

This seat grows with your child, offering a custom fit at every stage.

The anti-slip XL comfort harness is ideal for big babies. There are also expandable side wings for extra space. 

This is a car seat with the highest height limit at 57 inches and the car seat with the highest weight limit at 120 lbs.

It can be tricky to install, but with an adjustable harness and headrest, you should only have to install it once.

What We Liked

  • The original 3 across car seat
  • Folds easily for travel
  • Machine washable cover
  • Memory foam seat
  • Super safe with steel alloy frame and SIP

What Can Be Improved

  • Heavy
  • Can be tricky to tighten
  • No infant insert

Height Limit: Up to 57 in (145cm)
Rear-Facing Weight: 5-50 lbs (2.3-23 kg)
Forward-Facing Weight: 22-120 lbs (10-54 kg)
Seat Weight: 25.9 lbs (12 kg)
Dimensions: 28.5 H x 17 W x 16 L in
Expiration Date: 10 years from the manufacturing date

12. Graco Extend2Fit 3 in 1 Extended Tall Baby Car Seat

This is one of the best convertible car seats for big babies, as the 4-position adjustable extension panel gives your tall baby 5 inches of additional leg room.

This version has been improved with an anti-rebound bar. 

With 6 positions of recline, you can easily find the right angle for your tall baby. This seat is wide and tall, which is ideal for bigger babies.

The extension does make this seat very big, and it does take up space.

But the extra room, 10-position headrest, and no-rethread harness make up for it and make this a great seat option for big babies.

What We Liked

  • The anti-rebound bar makes the seat extra safe
  • Rapid remove cover is quick for busy moms
  • The harness can be stowed away under the seat
  • Well-sized cupholders
  • A great investment seat

What Can Be Improved

  • Shoulder harness release can be difficult to access
  • The latch harness doesn’t have a self-tightening mechanism
  • The level indicator doesn’t use a bubble

Height Limit: Up to 49 in (124.5cm)
Rear-Facing Weight: 4-50 lbs (1.8-23 kg)
Forward-Facing Weight: 40-100 lbs (18.1-45.4 kg)
Seat Weight: 26.9 lbs (12.2 kg)
Dimensions: 24.5 H x 19 W x 26.75 L in
Expiration Date: 10 years from the manufacturing date

Choosing the Right Convertible Car Seat for Tall Baby 

When choosing the right convertible car seat, you want it to have extended rear-facing up to 50 lbs, an adjustable headrest and harness, and features that offer extra legroom.

Extended Rear-Facing Use

It is safer for your baby to be rear-facing for as long as possible as any crash impact is absorbed by the seat. Tall babies need more space to stay rear-facing, so seats that have that option for up to 50 lbs with extended leg room and recline options are better.

Adjustable Headrest 

Tall babies need neck and head support and protection, and an adjustable headrest allows you to customize the fit to your baby. 10-12 headrest options are ideal as you can feel confident your baby is properly protected as they grow.

High Weight and Height Limit 

An infant car seat for tall baby should have a height limit of 49-57 inches. This provides your baby with comfort and protection. A weight limit of 65 lbs is adequate, but a weight limit of 120 lbs is better as the seat will fit your tall baby for longer.

Extra Legroom 

You want your baby to be rear-facing for as long as possible, but it will be a tight fit as they get older. Seats that offer extra inches are ideal because they provide space and comfort, allowing you to keep your baby rear-facing longer.

Safety Features

Seats that have side impact protection and an anti-rebound bar are the best choice. A 5-point harness is great for tall babies and is very safe. The safest way to ride is rear-facing, so seats that have a high weight and height limit and offer additional leg room are the safest.

Caitlin van Wyk

Caitlin van Wyk is a Parenting Writer and mother of two. With a background in psychology and teaching, she is passionate about offering support and educational content for parents as they navigate the highs and lows of raising kids. She has a Bachelor of Arts degree in English and Psychology from the University of South Africa. Caitlin also has a Level 5 TEFL Certificate and enjoys helping people get better at English. This experience lets her connect with people from different cultures, which adds depth to her writing. She managed Glengarry Holiday Farm for 10 years, emphasizing the importance of good communication and strong relationships in business and content creation.

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