# Convertible car seats with the highest height limits for tall children Which convertible car seats offer the most room for a tall child? Britax One4Life Slim ClickTight All\-in\-One Car Seat: The seat is an all\-in\-one that converts to a booster and is stated to fit a child from 5 to 120 lb and up to 63 inches tall\. Britax One4Life Slim ClickTight All\-in\-One: Britax says the seat grows with the child from 5 to 120 lbs and up to 63 inches tall across rear\-facing, forward\-facing and booster use\. Chicco OneFit LX ClearTex: Height limits are 43 in \(109 cm\) rear\-facing, 54 in \(137 cm\) forward\-facing and 57 in \(145 cm\) in booster mode\. Cybex Callisto T 360: Maximum child height is 57 in\. Cybex Callisto G 360 Select: Maximum child height is 57 inches\. Cybex \(sold as Cybex\-dc\) Callisto G 360: The maker gives the age range as newborn to approximately 10 years and a maximum child height of 57 in\. ### 1. [Britax \(listed by the store as Britax\-dc\) One4Life Slim ClickTight All\-in\-One Car Seat, SKU E1D407A\-OB](/products/ucp/albeebaby-com/9564436201703) (sold by albeebaby\.com) The seat is an all\-in\-one that converts to a booster and is stated to fit a child from 5 to 120 lb and up to 63 inches tall\. - Maximum height: The seat is an all\-in\-one that converts to a booster and is stated to fit a child from 5 to 120 lb and up to 63 inches tall\. (listing) - Weight range: The seat is an all\-in\-one that converts to a booster and is stated to fit a child from 5 to 120 lb and up to 63 inches tall\. (listing) - Width: The seat is 17\.5 inches wide, described as slim enough to fit three across in most vehicles\. (listing) ### 2. [Britax One4Life Slim ClickTight All\-in\-One](/products/ucp/albeebaby-com/9564457369831) (sold by albeebaby\.com) Britax says the seat grows with the child from 5 to 120 lbs and up to 63 inches tall across rear\-facing, forward\-facing and booster use\. - Maximum height: Britax says the seat grows with the child from 5 to 120 lbs and up to 63 inches tall across rear\-facing, forward\-facing and booster use\. (listing) - Weight range: The maker lists rear\-facing to 50 lbs, forward\-facing harness to 65 lbs, and high\-back belt\-positioning booster to 120 lbs\. (guide) - Width: The seat is 17\.5 inches wide, which the listing says lets you fit three across in most vehicles\. (listing) ### 3. [Chicco OneFit LX ClearTex](/products/ucp/albeebaby-com/9564456714471) (sold by albeebaby\.com) Height limits are 43 in \(109 cm\) rear\-facing, 54 in \(137 cm\) forward\-facing and 57 in \(145 cm\) in booster mode\. - Maximum height: Height limits are 43 in \(109 cm\) rear\-facing, 54 in \(137 cm\) forward\-facing and 57 in \(145 cm\) in booster mode\. (listing) - Weight range: The seat converts from rear\-facing harness \(5\-40 lbs\) to forward\-facing harness \(26\.5\-65 lbs\) to booster \(40\-100 lbs\)\. (listing) - Width: - ### 4. [Cybex Callisto T 360](/products/ucp/albeebaby-com/9722095272167) (sold by albeebaby\.com) Maximum child height is 57 in\. - Maximum height: Maximum child height is 57 in\. (guide) - Weight range: Child weight range is from 4 lb up to 120 lb\. (guide) - Width: Assembled measurements are 21\.7 in long, 19\.5 in wide, and 25\.5 in high\. (listing) ### 5. [Cybex Callisto G 360 Select](/products/ucp/albeebaby-com/9564456976615) (sold by albeebaby\.com) Maximum child height is 57 inches\. - Maximum height: Maximum child height is 57 inches\. (guide) - Weight range: Child weight range is from 4 lbs up to 120 lbs\. (guide) - Width: - ### 6. [Cybex \(sold as Cybex\-dc\) Callisto G 360](/products/ucp/albeebaby-com/9722094616807) (sold by albeebaby\.com) The maker gives the age range as newborn to approximately 10 years and a maximum child height of 57 in\. - Maximum height: The maker gives the age range as newborn to approximately 10 years and a maximum child height of 57 in\. (guide) - Weight range: - - Width: Assembled, the seat measures 21\.7 in long, 18\.7 in wide and 25\.5 in high\. (listing) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. 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