SeatFitFindercar seats, by spec

FAA-approved convertible car seats

Convertible seats that carry the faa-approved spec — 22 models to shortlist from.

🛟 Fit is decided by your seat manual + your vehicle manual. This page lists published specs to help you shortlist — it is not installation or safety advice, and it does not confirm a seat fits a specific car. Confirm install with the manuals, NHTSA, or a free certified car-seat technician (CPST) check.

Last verified 2026-06-11 · 22 models

Car seatStageNarrow (3-across)Ext. rear-facingFAALightweightBuy
Graco Extend2FitConvertibleAmazon →
Chicco NextFit MaxConvertibleAmazon →
Britax Marathon ClickTightConvertibleAmazon →
Britax Boulevard ClickTightConvertibleAmazon →
Nuna RAVAConvertibleAmazon →
Clek FlloConvertibleAmazon →
Diono Radian 3QXTConvertibleAmazon →
Diono Radian 3RXTConvertibleAmazon →
Cosco Scenera NEXTConvertibleAmazon →
WAYB PicoConvertibleAmazon →
Evenflo Tribute LXConvertibleAmazon →
Graco Contender SlimConvertibleAmazon →
Graco SlimFit3 LXConvertibleAmazon →
Britax Advocate ClickTightConvertibleAmazon →
Britax AllegianceConvertibleAmazon →
Maxi-Cosi Pria MaxConvertibleAmazon →
Chicco OneFit ClearTexConvertibleAmazon →
Safety 1st Grow and Go SprintConvertibleAmazon →
Chicco NextFit ZipConvertibleAmazon →
Diono Radian 3RConvertibleAmazon →
Graco Sequel 65ConvertibleAmazon →
Cybex Eternis SConvertibleAmazon →

Harnessed seats are FAA-approved for aircraft; boosters are not (a plane seat has no shoulder belt).

More: all convertible seats · all faa-approved seats · how to check fit →