If ur in AAU u should calculate it using the ECTS rather than ur credit hours..

What I wanna add on the answer above is that A= 4. B=3. C=2. D=1. So in the example above yehone tmhrt lay B kaleh be 3 naw metabazaw (credit hourun ) C kaleh demo be 2 tabazawaleh

Let me show u with example Grades credit hours 1 A 3 2 A 4 3 A 2 So in the table u can see there are 3 courses with A greads and different credit hours... What u have to do is 1: 4×3=12 2: 4×4=16 3: 4×2=8 Then add the 12+16+8=36 Then divide 36/9...(9 is all the credit hours added)