# Sorc damage calc problem

#### MageChick

##### Diabloii.Net Member
Sorc damage calc problem

The calculator Iâ€™ve been using (Chippydips) doesnâ€™t allow for adding elemental damage to sorc attacks (like eschuta or facets), so Iâ€™ll have to do some number crunching manually. Anyone know of a better calculator? I used to have one that allowed for +% damage gear, but now I canâ€™t find it. The InDiablo skill calculator isn't any better. Anyone know of a better one?

Baring a better skill calculator I was trying to do the math long hand and ran into some problems. I think I've found a work around, but my initial problem is puzzling me.

Here's the formula as I know it:
[base skill damage] * [synergy mod] * [mastery mod + (+% skill damage)] = [total damage]

The problem is that every time I do this long hand I get slightly different numbers than the skill calculators do. Iâ€™m assuming the calculators have it right, and my calculations are off a bit, probably some internal rounding function. I do understand that -enemy resistance also has a huge effect on damge, but that's easy to calculate later.

Hereâ€™s an example of calculating minimum damage on a level 41Fireball with 40 synergy points and 19 mastery points (not counting the facets yet)

573 * (1+ 40*14%) * (1+303%) = 15240.65

The calculators say 15253 damage. Thatâ€™s a difference of only 17 points or about 0.1% I suppose I can just ignore this small difference, but its still annoying. This does make me think I know what I'm doing though.

Now If I were to add in 3 fire facets the formula looks like this:
573 * (1+ 40*14%) * (1+303% + 15%) = 15807.92

OK, here's where I start getting things messed up. This is an example of calculating maximum damage on a level 40 Lightning with 38 synergy points and 20 mastery points (not counting the facets yet)

912 * (1+ 38*8%) * (1+542%) = 23654

The calculators say 24122 damage. Here the difference is 468 points! Thatâ€™s almost 2% of total damage. Still kinda small, but now it makes me think I should find a better way to calculate damage.

Now if I add in three facets the formula looks like this:
912 * (1+ 38*8%) * (1+542% + 15%) = 24207

Donâ€™t worry I wonâ€™t walk you through the math on each spell, but I did want to show you that I know what Iâ€™m doing (at least I think I do).

I wondering if this would be easier (and more accurate) to add in the extra damage from gear. Basic algebra says I should be able to take the final damage I get from the skill calculator, devide out the slvl mastery percent (1+ mastery%), then mutiply that result by slvl mastery percent + additional gear damage% (1 + mastery % + gear damage %).

Matching my calculated lightning Lightning numbers above with 15% more from facets would be:
23654 / 642 * 657 = 24207.

Anyone know of a simplier way to calculate this?

#### ToThePoint

##### Diabloii.Net Member
looks like you are doing it fine
however, what chippydip doesn't show is that a number of skills actually have decimal base damage and chippydip uses these decimalised figures but displays the rounded.
id guess base fb damage at lvl 41 was 573.5-621.5
573.5*(1+40*0.14) *(1+3.03) = same as skill calc
facets:
method = fine just the base isn't shown correctly for you to use

lightning mastery i think you have just accidentily clicked in 39 synergy points eg 20 18 and 1 = 39 not 38 which matches perfectly

easiest way is to use a calc
use calc to get synergised base damage then add facets onto the % you would know comes from mastery (use skill calc)
(ofc for cold its simpler)
but you can figure it yourself as above if you iron out little mistakes

#### MageChick

##### Diabloii.Net Member
Hmm, double checked the skill calculator. I must have had 39 synergy points (probably put 1 in nova on accident).

For both examples I was figuring on tal set with +2 mastery points from the orb. I forgot to mention that I'm figuring a slvl 42 mastery for both examples - but the numbers I showed did account for it. Thanks for the help