The Best Convertible and All-in-One Car Seats

Your kid could end up sitting in the same convertible car seat for five years or more—making it arguably your most significant car seat purchase. Since 2017, we’ve evaluated over 90 convertible seats. We’ve interviewed safety experts, pored over reviews, endured our share of aching muscles from installing literal towers of car seats, and concluded that the Graco Extend2Fit Convertible is the overall best choice. The seat does a standout job of encouraging extended rear-facing use—the safest position for a young child. We also recommend the Britax Boulevard ClickTight for those whose top priority is ease of installation. We’ve added the Clek Foonf as an also-great pick for families that are happy to pay more for a beautiful but super-heavy (and ultra-sturdy) seat. For those who are set on an “all-in-one” seat that transitions from infant seat to convertible to booster, our pick is the Graco Extend2Fit 3-in-1.