At Chicco, we offer more than just car seats— we’re a partner in every stage of your child’s journey. With years of expertise and access to trusted experts, we’re here to guide you through the car seat journey as your child grows. Education is at the heart of our mission, helping parents make confident choices along the way. And rightfully so. The American Academy of Pediatrics (AAP) estimates that children under sixteen years of age spend an average of forty-five to fifty minutes per day in a vehicle. Considering that your child should be in a car seat or booster for the first 8 to twelve years of life, that could translate to over thirty-six hundred hours spent in the car! Whether your child is on the high end of that average or the low end, choosing the right car seat based on height, weight, and maturity before hitting the road will help make the difference in those split seconds when it matters most. Car Seat Stages Chart by Age, Weight & Height This chart provides a quick overview of car seat stages by age, weight, and height. Use it as a guide to see where your child fits today and what comes next. Car Seat Type Approximate Age Range Weight Ranges Height Ranges Child Fit Guidance Infant Car Seat Birth to 2 years Up to 22-30 lbs Up to 32 inches Your child’s head is below the top of the car seat. Harness straps should be at or below the shoulders, and the chest clip positioned at armpit level. Remove any infant inserts once your child exceeds the manufacturer’s weight limits. Convertible Car Seat Birth to 6+ years 5-65 lbs Up to 49 inches Harness straps should be at or below the shoulders when rear-facing and at or above the shoulders when forward-facing. Harness should fit snugly with no slack; you shouldn’t be able to pinch a fold in the harness strap at the shoulder. Harness Booster 2 years to 8+ years 26.5–100 lbs Up to 57" Harness straps should be at or above the shoulders when forward-facing. Harness should fit snugly with no slack; you shouldn’t be able to pinch a fold in the harness strap at the shoulder. For Booster mode (for children at least 4 years old, 40 lbs, and 44" tall), your child can sit upright the entire ride; shoulder belt rests flat cross chest/shoulder, lap belt low across thighs Booster Car Seats 4 years to 8+ years 40-100+ lbs 44-57 inches Your child can sit upright the entire ride; shoulder belt rests flat across chest/shoulder, lap belt low across thighs Seat Belt 8+ years Child should be mature enough to sit properly n/a Your child can sit back with knees bent naturally at the seat edge, belt fits correctly across chest and thighs Always follow the instructions in your car seat and vehicle manuals for height/weight limits, as well as installation. Guidance here summarizes AAP and/or NHTSA recommendations and is not a substitute for manufacturer instructions or state law. Laws vary by state—always check current requirements where you live. Stage 1: Rear-Facing Car Seats When it comes to car seat stages, you’ve probably seen car seats installed both ways, rear-facing and forward-facing, but how do you know which is correct for your little one? The AAP recommends that all infants and toddlers ride in a rear-facing car seat for as long as possible because it’s the safest option for growing children whose skeletal systems are still developing. This amounts to most children under the age of 2 riding rear-facing. Infants can ride in three different types of rear-facing car seats, including an infant car seat, a convertible car seat set in rear-facing mode, or an all-in-one car seat set in rear-facing mode. The maximum weight range for rear-facing car seats varies from 22-40 lbs., depending on the car seat type. You can use any of these rear-facing options from the time you bring your little one home from the hospital to when they reach the weight or height limits for the specific model you’re using. If you start with an infant only car seat you will have to move to a convertible car seat or all-in-one model to continue rear facing. Why is the Rear-Facing Car Seat Stage Important? Using a rear-facing car seat is important because your little one’s skeletal system isn’t fully formed yet and their bones need time to fuse as they grow. For this reason, car seat progression should not be rushed, as babies need more support to protect their delicate bodies, including their head, neck, and spine. As shown in the graphic below, the rear-facing car seat is designed to provide crucial support for the neck and head in the event of an accident. In the rear-facing stage, car seats are built to support a child’s head, neck, and spine, offering important protection in the event of an accident. Stage 2: Forward-Facing Car Seats Exactly how long a child’s car seat should be in the rear-facing stage is “as long as possible”. Unfortunately, there is no universal rule, but that’s because the AAP (and Chicco) recognizes that each child grows differently and at their own pace. To keep your child as safe as possible, you’ll need to consult the manufacturer’s usage requirements for your specific car seat and keep them rear-facing until the maximum height or weight limits have been reached. Only then should you consider switching to a forward-facing car seat. According to the AAP, the rear-facing car seat stage applies to virtually all children under 2 years of age. Always follow your product’s instruction manual for proper fit by age, weight, height, and maturity. Car seat laws can vary by state, so be sure to review the most up-to-date requirements where you live. While you may start to see your growing toddler getting a little cramped back there, don’t consider that your cue to switch to a forward-facing car seat stage. The developing joints of a young child are much more flexible than an adult’s, making that “crisscross applesauce” position a lot more comfortable than it may seem! When the time comes, you can easily transition your convertible car seat, such as the Fit360®, or your OneFit™ LX to forward-facing mode. At Chicco, we also offer the MyFit® harness + booster car seat, which grows with your child from toddler through big kid. It's a forward-facing car seat that you can start using at age 2 and 26.5 lbs with a maximum weight limit of sixty-five pounds in harness mode. The MyFit has one of the highest harness heights on the market and will allow you to take advantage of the safety of a 5 point harness longer then most car seats. You can then transition it to a belt-positioning booster once your child reaches 54” or the harness slots go below their shoulder for extended use up to a hundred pounds! Stage 3: Booster Seats Congratulations! You survived the foggy newborn stage and even the active toddler stage! You appreciated the convenience of the rear-facing infant car seat and eventually witnessed your growing kiddo enjoying a world of new views in their forward-facing car seat. Now, your not-so-little one has reached the maximum height and weight limits for the convertible seat and may be ready to transition to a booster seat. If you have an all-in-one car seat or a harness + booster car seat, all you’ll need to do is transition your car seat from harness mode to booster mode. Every child is different, but little ones can often make the switch to a booster seat when they are at least 4 years old, between 44-57" tall, and at least 40 lbs. The transition to the vehicle seat belt stage, however, is not just about height and weight; maturity matters too. Ensure that your big kid can sit relatively still during every ride to keep the seat belt in the proper position. We offer a variety of belt-positioning booster car seats designed to give your kiddo a boost so that the vehicle seat belt is positioned for proper use. The KidFit® 2-in-1 Booster Seat adapts with your child, with ten height positions that provide adjustable head and shoulder protection as your child grows. Parents can also choose the backless option, offering flexibility as your child progresses in age and maturity. At the booster car seat stage, children are older and schedules are often busier, so convenience is essential. The GoFit® Backless Booster Seat features a built-in carry handle, making it easier for on-the-go families as they move from activity to activity. Stage 4: Vehicle Seats Before you know it, you blink and your “little one” is now in the double digits and the last stage of their car seat journey is in sight. You’ll know if your big kid is ready to graduate from the booster to the vehicle seat when their back and bottom are pushed all the way against the backrest and: The knees bend naturally at the end of the seat and feet touch the floor The vehicle lap belt fits across the thighs The shoulder belt fits across the shoulder and chest Every child is different, but most kids graduate to the vehicle seat between the ages of 8 to 12, per the NHTSA. As your child grows, they may become anxious to ride in the vehicle seat like their older sibling, but there is no need to rush and skip crucial car seat stages. A well-fitted and properly installed car seat is the safest way to transport your precious cargo. Visit our Car Seat Safety page for more tips and instructional videos and SafeKids.org to find a car seat checkup event near you. Check out our car seat comparison if you’re ready to find the best fit for your family.