10 Best Convertible Car Seat For Newborn of December 2025

• 10 years of use: New one4life convertible to booster car seat grows with your child from 5 to 120 pounds & up to 63 inch tall
• Install confidently: With a ClickTight installation, you'll know it's right in 3 easy steps
• One4life: Converts from rear facing infant car seat, to forward facing 5 point harness, to high back belt positioning booster
• Britax safety: High strength steel frame, crumple zone helps absorb crash energy and patented v-shaped tether
• Full body protection: 2 layers of side impact protection surround the head, neck & torso

BRITAX

• 4-in-1 car seat gives you 10 years of use: seamlessly transforms from rear-facing harness car seat (4-40 pounds), to forward-facing harness car seat (22-65 pounds), to highback belt-positioning booster (40-100 pounds), to backless belt-positioning booster (40-120 pounds)
• Graco ProtectPlus Engineered helps to protect your little one in frontal, side, rear and rollover crashes.
• Simply Safe Adjust Harness System adjusts the height of your harness and headrest to 10 positions in one motion to ensure that your child is always properly secured
• 6-position recline helps keep your growing child comfy on your many journeys together
• The Graco exclusive InRight LATCH attachment provides an easy, one-second attachment with an audible click to help ensure secure installation
• Integrated belt lock-off for easy vehicle seat belt installation
• Machine washable, RapidRemove cover removes in 60 seconds without uninstalling the seat for easy cleaning

Graco

• Designed to help protect your rear facing child from 5 40 pounds and your forward facing child from 22 65 pounds
• Simply Safe Adjust Harness System adjusts the harness and headrest height together with one easy motion no re threading required
• Graco ProtectPlus Engineered: a combination of the most rigorous crash tests that helps to protect your child in frontal, side, rear & rollover crashes; additional testing based on the New Car Assessment Program and for extreme car interior temperatures
• 8 position headrest is adjustable using one hand and easily adapts to your growing child's needs
• Hassle free installation in the rear facing position using LATCH and an easy to read level indicator

GRACO

• 4 seats in 1: 4-in-1 seat gives you 10 years of use--it seamlessly transforms from rear-facing harness (5-40 lb), to forward-facing harness (22-65 lb), to highback booster (40-100 lb), to backless booster (40-110 lb).
• Simply Safe Adjust Harness System: Adjust the height of your harness and headrest to 10 positions in one motion to ensure that your child is always properly secured.
• 10-position Headrest: One-hand, 10-position adjustable headrest is easy to use and grows to properly fit your growing child.
• 6-position Recline: Helps keep your growing child comfy on your many journeys together.
• Latch Equipped: For an easy installation.
• Graco ProtectPlus Engineered: a combination of the most rigorous crash tests that helps protect your child in frontal, side, rear & rollover crashes; additional testing based on the New Car Assessment Program and for extreme car interior temperatures

GRACO

• 3 in 1 seating system: Rear facing, from 4-40 pounds; Forward facing to 65 pounds; And up to 100 pounds in booster mode
• Side impact protection with cell protects your child's head where it's needed most in a side impact crash
• In and out harness holders keep straps out of the way when buckling
• 1 click latch system, with easy click-in for better installation
• Quick fit shoulder harness automatically raises the harness and headrest height

Maxi-Cosi

• Convertible car seat grows with your child from rear-facing harness (4-50 pounds) to forward-facing harness (22-65 pounds)
• Made of Steel reinforced: Product dimensions – 20.75” D x 19” W x 24.5” H; Product weight – 19.25 pounds
• Up to 50 pounds rear facing, allowing your child to safely ride rear-facing longer.Do not use bleach
• Graco ProtectPlus Engineered: Simply safe adjust no-rethread headrest and harness adjust together
• Extend2Fit 4-position adjustable extension panel provides up to 5" additional legroom, allowing your child to safely ride rear facing longer

Graco

• Built to grow: The 3 in 1 car seat built to grow for extended use through 3 stages: Rear facing 5 to 40 pounds, forward facing 22 to 65 pounds, and belt positioning booster 40 to 100 pounds
• Side impact protection: The grow and go’s side impact protection helps keep your child safe
• Easy in, easy out: Harness holders keep the harness in an open position so it is easy to get your child in and out of the seat. Rear facing height is 19 to 40 inches. Forward facing height is 29 to 52 inches
• Quickfit harness: With the quickfit harness you can easily adjust both the harness and headrest in one simple step
• Wash and dry: Machine washable and dryer safe seat pad features snaps that make it simple to take off of the seat; No fuss for truly easy cleaning
• One click UAS

Safety 1st

• FITS NEWBORN TO TODDLER: Car seat designed for infants from birth to approximately 4 years, 49 inches tall, or 65 pounds; Weight capacity: 4 to 65 pounds; Age: Newborn to 4 years; Dimensions (L x W x H): 30 x 19 x 24 inches
• ROTATABLE SEAT: Car seat base allows you to rotate the seat 360 degrees and features a load leg for stabilization; Innovative, 1-hand rotatable seat allows parents to easily get their child in and out; Load leg stabilizes car seat and can reduce rotation up to 30% in an accident
• EASY TO INSTALL: Secures with EasyLock bar or seat belt for quick, simple, and secure installation in both rear- and forward-facing positions
• SAFE: Keep baby safe with 5-point safety harness, load leg, anti-rebound design, linear side-impact protection, and energy-absorbing shell; Linear side-impact protection system absorbs up to 25% more impact; Grows with baby with a removable newborn insert, height adjustable headrest, adjustable harness, and 12-position recline
• SENSORSAFE TECHNOLOGY: SensorSafe Technology provides essential alerts to your smartphone when unsafe conditions arise

Cybex

• THE NEXT GENERATION 4-IN-1 RADIAN CONVERTIBLE CAR SEAT: Introducing 23 improvements in safety and new features from the award-winning 3QXT slimfit convertible car seat
• 4-in-1 NEWBORN PROTECTION FROM 4 lbs: The energy absorbing protection Safe+ newborn insert provides the secure travel position, adjustable harness and anti-slip harness pads complete with Safe+ steel anti-rebound bar to reduce rebound rotation by 50%. Security 3 different ways - rear-facing, forward-facing, and high back booster mode
• SAFE PLUS ENGINEERING: Radian 3QXT is subjected to a combination of the most rigorous crash tests to ensure we have the safest car seat possible. The radian 3QXT features high-density plastic and steel reinforcement to create the ultimate protection
• 10 YEARS ONE CAR SEAT: With 4 ways to travel safely from birth to booster, the radian 3QXT adapts as your child grows to offer a custom adjustable fit from birth to 120 lbs
• REAR-FACING FOR LONGER: This slimfit convertible car seat is designed and engineered to keep your child rear facing even longer up to 50 lb/ 22. 7 kg approx. 4 years old

DiONO

• Remarkably easy installation with a 9-position ReclineSure leveling system, SuperCinch LATCH Tightener, and LockSure seat belt tightening system
• Superior DuoGuard protection with a deep rigid shell and EPS energy-absorbing foam, plus a steel-reinforced frame
• Accommodates growing children with a padded no-rethread harness, 9-position headrest, and easy transition from rear-facing to forward-facing
• Padding is soft, removable, and machine-washable for comfort and convenience
• Includes removable, dishwasher-safe cup holder

Chicco