CAR SEAT STAGE GUIDE — WHICH STAGE FITS RIGHT NOW
Which Car Seat Stage Does My Child Need? Get the Answer Now
Rear-facing, forward-facing, booster, or belt — the right answer depends on age, weight, and height together. Pick the wrong one and you’re not legal.
Enter your child’s age, weight, and height. The checker cross-references NHTSA FMVSS 213 thresholds and your state’s law to return the exact seat stage required.
Wrong seat stage is a ticketable offence in every US state and the leading cause of preventable child injury in vehicle crashes.
Parents at every stage of child development, from newborn through age 12.
- NHTSA FMVSS 213 stage thresholds
- All 50 US states
- AAP transition guidelines
- EU ECE R129
- Canadian CMVSS
CHECKER
Disclaimer: This tool is provided for educational and informational purposes only and does not constitute legal, safety, or professional advice. Sunferno Automotive Accessories cannot verify how products are installed, used, or attached in your specific vehicle or situation — proper installation, use, and securement are solely the responsibility of the user. Laws and regulations vary by jurisdiction and change over time; always confirm current requirements with your local authorities or a qualified professional. Sunferno products must be used strictly in accordance with manufacturer instructions and applicable regulations.
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