Originally Posted by
Slashley
Sadly, there's no easy way to calculate this.
R weapons are 0% base. SR weapons are 3%. SSR weapons are 6%. Dual skill weapons, if they're Hime release weapons, usually have one SSR skill and one R skill, and event dual-skill weapons are SR and R.
Each skill LEVEL is 0.5%, and yes, that means that dual-skills double-dip into this.
So for example 10 equipped SR weapons with each slvl20 is (10*3%) + (10*20*0.5%) = 30% + 100% = 130% grid.
I've made a spreadsheet for myself to help keep track of what weapons I have for each element and their skill levels, and it calculates the exact percentages for me.