An infant seat is a rear-facing carrier with a handle that clicks into a base left in the car. You can carry a sleeping baby inside, and many click onto a stroller. Its weight and height limits are lower than a convertible's, per each maker.
Compare the maker's weight and height limits, the carrier weight (without the base), and whether the maker lists a baseless (belt-path) install. Follow the manual for every limit.
Key facts
We track 97 seats here from 21 brands, with limits taken from each maker. Last checked 2026-11-06.
Infant seats are rated up to 22 lb to 35 lb rear-facing. Without the base they weigh 6 lb to 29 lb; the middle is 9 lb.
53 of 97 infant seats list a baseless install for taxis and travel.
Published widths run from 14.8 in (Evenflo NurtureMax) to 19 in.
Maker expiration periods run from 6 to 10 years from the date of manufacture.
82 seats list FAA approval for aircraft. Boosters aren't certified for use on planes.
7 seats rotate for loading.
Computed from each maker's published specs, last checked 2026-11-06.
Infant car seats by the numbers
Lightest carriers to lift
Carrier weight without the base, per each maker. You lift this with a baby inside.
From NHTSA: "Your child under age 1 should always ride in a rear-facing car seat." Stay rear-facing "until he or she reaches the top height or weight limit allowed by your car seat's manufacturer." (NHTSA) Find a certified Child Passenger Safety Technician through NHTSA. Check the label and the maker's instructions, and ask your pediatrician about your child.
Ask the meadow
Questions about infant car seats
Answers come from each maker's published specs. Safety and health questions link to the agency or medical source.
Are expensive infant car seats worth it?
Every infant seat sold in the US must meet the same federal crash standard (FMVSS 213); price buys features and materials. Among the 60 with a list price, 70% of the priciest third have a load leg, versus 0% of the cheapest third; 65% of the priciest third have an anti-rebound bar, versus 40% of the cheapest third; 15% of the priciest third have rotation, versus 5% of the cheapest third; 70% of the priciest third have no added flame retardants, versus 25% of the cheapest third. The cheapest third lists under $260.
Which infant car seats are made without added flame retardants?
37 of the 97 we track say so, per each maker. The lowest list price is the Chicco KeyFit ClearTex at $169.99. They still meet the federal flammability standard for vehicle interiors (FMVSS 302).
How long do infant car seats last before they expire?
Between 6 and 10 years from the manufacture date, for the 74 that publish one. The longest is the UPPAbaby Mesa V3 at 10 years. The date of manufacture is on the seat's label; try the expiration calculator.
Do I need a new car seat after an accident?
After a crash, follow your seat's manual and NHTSA's guidance. Check the label and the maker's instructions, and ask your pediatrician about your child.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
Most-compared pairs
Side-by-side specs for the closest rivals in this category.
Infant
