A car seat carrier includes a belt for holding the car seat and a shoulder strap attached to the belt for carrying the car seat. The belt resides around the base of the car seat. A first end of the shoulder strap attaches to a center point of a first belt end. A cross-strap crosses over the car seat, attaching to opposite sides of the belt near a second belt end, and is connected to a second end of the shoulder strap by a sliding buckle. The belt is preferably a fixed length belt which fits most car seats. The shoulder strap may further include padding to increase comfort and may be adjustable in length.