● Car Seats · Comparison

Chicco KeyFit 35 Infant Car vs Britax Boulevard ClickTight Convertible Car

Both made our Best Car Seats for Newborns shortlist, at #1 and #3. Here's how they differ and who each one suits.

✎ PickHonest Research Desk▦ Updated March 3, 2026◷ 5 min read

As an Amazon Associate I earn from qualifying purchases. Picks are based on manufacturer specs, independent reviews and owner reports.

Chicco KeyFit 35 Infant Car SeatChicco KeyFit 35 Infant Car SeatView on Amazon VS
Britax Boulevard ClickTight Convertible Car SeatBritax Boulevard ClickTight Convertible Car SeatView on Amazon

Quick verdict

Choose the Chicco KeyFit 35 Infant Car Seat if you want fits from 4 pounds with the included insert, one of the lowest starting weights of any infant seat. Choose the Britax Boulevard ClickTight Convertible Car Seat if you'd rather have clickTight install is widely considered one of the easiest convertible seats to install tightly and correctly. Overall we rank the Chicco KeyFit 35 Infant Car Seat higher: #1 versus #3 in our Best Car Seats for Newborns list.

Winner overall: Chicco KeyFit 35 Infant Car Seat

Chicco KeyFit 35 Infant Car Seat vs Britax Boulevard ClickTight Convertible Car Seat compared

Every difference that matters, in one table.

Keep researching

  • Best Car Seats for Newborns
  • Chicco KeyFit 35 Infant Car Seat review
  • Britax Boulevard ClickTight Convertible Car Seat review
  • All car seats

Bottom line

Choose the Chicco KeyFit 35 Infant Car Seat if you want fits from 4 pounds with the included insert, one of the lowest starting weights of any infant seat. Choose the Britax Boulevard ClickTight Convertible Car Seat if you'd rather have clickTight install is widely considered one of the easiest convertible seats to install tightly and correctly. Overall we rank the Chicco KeyFit 35 Infant Car Seat higher: #1 versus #3 in our Best Car Seats for Newborns list.

Chicco KeyFit 35 Infant Car Seat
Top pick

Chicco KeyFit 35 Infant Car Seat

Chicco

Fits from 4 pounds with the included insert, one of the lowest starting weights of any infant seat

  • Fits infants 4 to 35 pounds
  • Removable infant head and body support insert
  • Stay-in-car base with load leg and level indicator
  • UPF 50+ full-coverage canopy
  • Compatible with most Chicco strollers for a travel system

Pros

  • ClickTight install is widely considered one of the easiest convertible seats to install tightly and correctly
  • Click & Safe indicator confirms harness snugness without guesswork
  • Two layers of side impact protection is a genuine structural feature, not just marketing

Cons

  • Does not convert to a booster mode, so a separate booster is needed later
  • Priced meaningfully higher than the Graco 4Ever DLX
  • 5-pound minimum, slightly higher than Graco's 4-pound minimum
Prices and availability change, so confirm on Amazon.View on Amazon
Britax Boulevard ClickTight Convertible Car Seat

Britax Boulevard ClickTight Convertible Car Seat

Britax

One seat that goes from newborn to booster years, no need to buy a second convertible seat later

  • Rear-facing 5 to 40 pounds, forward-facing 20 to 65 pounds
  • ClickTight installation system with a steel tensioner
  • Two layers of side impact protection
  • 14-position no-rethread harness
  • Click & Safe snug harness indicator

Pros

  • One seat that goes from newborn to booster years, no need to buy a second convertible seat later
  • ClickTight install is widely regarded as one of the easiest convertible installs to get tight
  • 14-position harness grows with the child without rethreading straps

Cons

  • 5-pound minimum means it will not fit the smallest newborns or preemies
  • Does not detach from the car, so t here is no carrier or stroller function
  • Bulkier and heavier to move between vehicles than an infant seat and base
Prices and availability change, so confirm on Amazon.View on Amazon

FAQ

Common questions

Which is better, the Chicco KeyFit 35 Infant Car Seat or the Britax Boulevard ClickTight Convertible Car Seat?

Choose the Chicco KeyFit 35 Infant Car Seat if you want fits from 4 pounds with the included insert, one of the lowest starting weights of any infant seat. Choose the Britax Boulevard ClickTight Convertible Car Seat if you'd rather have clickTight install is widely considered one of the easiest convertible seats to install tightly and correctly. Overall we rank the Chicco KeyFit 35 Infant Car Seat higher: #1 versus #3 in our Best Car Seats for Newborns list.

What is the difference between the Chicco KeyFit 35 Infant Car Seat and the Britax Boulevard ClickTight Convertible Car Seat?

The Chicco KeyFit 35 Infant Car Seat stands out because fits from 4 pounds with the included insert, one of the lowest starting weights of any infant seat, while the Britax Boulevard ClickTight Convertible Car Seat stands out because clickTight install is widely considered one of the easiest convertible seats to install tightly and correctly. The trade-offs differ too: the Chicco KeyFit 35 Infant Car Seat's ma in caveat is that height limit around 30 inches means many babies outgrow it before 35 pounds, and the Britax Boulevard ClickTight Convertible Car Seat's is that does not convert to a booster mode, so a separate booster is needed later.

Is the Chicco KeyFit 35 Infant Car Seat worth it over the Britax Boulevard ClickTight Convertible Car Seat?

For most buyers, yes: it's our #1 pick. Consider the Britax Boulevard ClickTight Convertible Car Seat instead if height limit around 30 inches means many babies outgrow it before 35 pounds is a deal-breaker for you.

Who should buy the Britax Boulevard ClickTight Convertible Car Seat instead of the Chicco KeyFit 35 Infant Car Seat?

The Britax Boulevard ClickTight Convertible Car Seat suits convertible use, while the Chicco KeyFit 35 Infant Car Seat is best for newborns.

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