How much to convert from r12 to r134a?

To convert from R12 to R134a, you typically need to replace the refrigerant, oil, and possibly some components of the system, such as the receiver-drier or expansion valve, to ensure compatibility. The cost for this conversion can vary widely depending on the vehicle or system, but it generally ranges from $200 to $600, including labor and materials. It's essential to have a qualified technician perform the conversion to ensure proper handling and compliance with regulations.