Here is the UC GPA calculator and it will give you the UW UC GPA, the Capped Weighted UC GPA and the Fully Weighted UC GPA.
https://rogerhub.com/gpa-calculator-uc/
Count up all your A’s, B’s, C’s etc… and how many semesters of UC approved Honors, AP, IB and/or DE courses taken 10-11th and enter into the calculator.
If you do not know which HS courses qualify for the honors points, use this link and type in the name of your HS.
https://hs-articulation.ucop.edu/agcourselist#/list/search/institution