Is there an official formula for this? If not is there some unofficial formula that somebody has come up with? I have seen a number of people refer to average damage when posting builds and just got a bit curious, plus it would be super helpful when thinking of hypotheticals.
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The damage formula is h(d+s)+tchd.
h = Chance to hit, expressed as a percentage
d = Damage per hit. Average damage is assumed.
s = Precision damage per hit (or other damage that isn't multiplied on a crit). Average damage is again assumed.
t = Chance to roll a critical threat, expressed as a percentage.
c = Critical hit bonus damage. x2 = 1, x3 = 2, x4 = 3.
Ripped from the DPR olympics thread.
Thanks!
EDIT: Didn't notice the first part about a percentage. Do I have to have a particular AC in mind when calculating that? Is there a standard AC to test against?
It is best to test against the average AC for a given level. I don't remember where in the books this is located, but you can look at it here.
You don't have to use that, and if you are just comparing between characters you can set it to whatever. But this will give you a general idea of the sort of damage you will be doing against a CR appropriate enemy.
Thanks again, this is going to shorten my work quite a bit.