A carrier transporter is described which is retractable into a low-profile configuration, and extendable to accommodate a carrier or child seat. An adjustable height bar positions a securing device to coincide with a belt path of the carrier and allow a strap to be lead through the belt path and re-secured back to the bar through a buckle. The base of the carrier is supported by an extendable base platform having grip padding to further secure the base to the transporter. The base platform and wheels move together when retracting the transporter and move away from each other when extending the transporter.