Family · official-source review · reviewed 2026-10-10
Parents pass down car seats without checking the expiration date stamped on the seat, which is typically 6–10 years from manufacture.
Calculate the expiration date of a car seat from its manufacture date and useful life.
Parents and caregivers using child car seats.
Use the source document or official route that applies to your situation. This guide does not contact another person or verify external information.
Find the sticker on the car seat showing the manufacture date.
Check the manual or seat label for the stated useful life (usually 6–10 years).
Add the useful life years to the manufacture date.
Replace the seat before that date; do not use an expired seat after a crash either.
A seat manufactured 01/2020 with a 6-year life expires 01/2026 — replace it before that date.
Use your own source and details. The example is not a record about a real person or organization.
U.S. National Highway Traffic Safety Administration · reviewed 2026-10-10
What this source supports: Car seats expire — typically 6 to 10 years from manufacture — and must be replaced after the expiration date or a moderate or severe crash.
Source limit: Check your specific seat label for its exact expiration date and instructions.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
This counts years from dates you enter. It does not verify seat safety or replace manufacturer instructions.
Check your specific seat label for its exact expiration date and instructions.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Calculate a car seat expiration date from manufacture date and stated useful life.
This adds years to a date you enter. Check the actual label on your seat.
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
The App computes the worked example with your own numbers, in your browser.
APP 1
Calculate a car seat expiration date from manufacture date and stated useful life.
Free · no account · no upload
Open Car Seat Expiration TrackerThe App runs in this browser. It does not send or save entries. Copy, download, or print only when you choose.
This guide uses short, direct instructions as an ASD-STE100-style writing target. It is not a formal certification.
Companion App: Car Seat Expiration Tracker. It runs in this browser and does not upload your entries.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.