Transfer Student GPA

After my freshman year of college I decided I need to transfer. I love my new school but I do have a GPA question I was hoping someone could answer…

My old school operated on a 1 credit per class basis. For example for a basic gen chem class with lab, I got 1 credit. I also got 1 credit for a aalc class (no lab).

My new school operates on a credit hours system. For example orgo at my new school was 3 credits for the lecture and 2 credits for the lab. For a psych class I got 3 credits.

I have no idea how to “combine” these GPAs for my own understanding of where I stand.

Any suggestions?