This is a spreadsheet allowing you to work out the WSC (weaponskill mod) portion of your weaponskill damage. It's very simple to use. Simply type in the % of the mod (eg, a 50% STR 50% VIT weaponskill, you will type in 50 into one of the mods and 50 into one of the others; it does not matter which way around it goes) and then the values of your stats and the spreadsheet will calculate the rest for you.
To simplify it further, the numbers displayed in red are the only ones which need changing.
A brief explanation;
http://wiki.ffxiclopedia.org/wiki/WSC <== take your Alpha value from this. By default it's 0.83 (value at level 75), but as your level decreases, Alpha increases. Just substitute it in.
Percentage, simply replace by the relevant percentage, and value, the value of that mod (for instance, for a 50% STR WS, where you had 90STR, you'd put in 50 into the percentage column, and 90 into the value column. Simple).
If the weaponskill only has one mod, just put 0 in the secondary mod percentage column.
Now notes;
This is only a WSC calculator! It does NOT calculate fSTR benefit from STR. It does NOT calculate attack bonus from STR. It does NOT calculate the potential benefits of accuracy from DEX. This is simply WEAPONSKILL MOD, nothing more, nothing less.
To calculate the impact of fSTR, 1 fSTR = 1 WSC (which this spreadsheet calculates). For melee, 4str = 1fstr, generally. For ranged, 2str = 1fstr, generally. So if 10STR gave you one less WSC than 6STR 10VIT, they would be EQUAL in terms of (WSC + fSTR). 10STR would win in this case because you'd also get an attack benefit from it (ensure when using this comparison that fSTR is not at cap).
http://www.savefile.com/files/1611382 <== link to file.
I know this is an incredibly simple spreadsheet, but I still hear people asking about WS mods all of the time, and so thought I might as well make it since it is so simple.
XI Wiki


