Converting A Levels (United Kingdom) to GPA

I would like some guidance in converting A Levels and GCSE to GPA

Any help would be most appreciated

You don’t translate, you list your actual results and predicted results.
However, you need an idea of how competitive you are. So: all GCSE’S form one “GPA” + A levels form one “GPA”, total divided in two is an approximate GPA.
For A levels
Each A* = A+/4.3, A= A/4, B= A-B+/3.5, C= B/3, D= B-C+/2.5, E= C/2, F,G = D/1, anything lower =F
For GCSE’S, the new scale changed things a bit: there are no official “fails”; a 3 is not a fail but doesn’t allow you to continue to further study so it’s like a C in the US. A 4 is sufficient to pass but not sufficient for A level advanced study, so C+/B-. And 7,8,9 are As.
So
9,8 = A+ , 4.3
7= A, 4
6= A-, 3.7
5= B+/B, 3.2
4= C+/B-, 2.5
3= C, 2
2, 1= D
No grade= F

why dont you use online calculators they are self efficeint

List actual/predicted results. Adcoms will figure it out.