reposting my work from reddit so excuse some weirdness:

so yesterday i spent about 8 hours punching things without a weapon then attacking them with a weapon, recording my highest and lowest values and comparing them to my stats and damage via other means i did this on 5 different monsters with different levels from 1-30 this is what i got:

Actual damage = (atk+skill atk+ atk bonuses - def)

if crit multiply by 1.5 and add crit attack value from character sheet

then multiply by element/type mod (slash/stab/hit)

then add "additional damage" things like concentrate or from " bonus attack damage" stats.

the difference between attack and "bonus attack damage" is atk appears on your sheet and goes in the beginning and gets multiplied, bonus attack damage just adds onto the final number and is never multiplied, but i think it also never decreases... i dont have concentrate to fully test ill get one rank in it i guess and test out for sure...

this formula works from 1-30 punching if i equip a +2 2handsword and hit things weak vs slashing though it seems to be off by +/- 1-5% so im thinking the way i do def isn't correct, it's probably not a entirely flat value maybe? or maybe theres weapon damage modifiers for size? iirc in RO 2 hand swords did more damage to small? idk that could explain the variance. either that or weapon attack can range out of its displayed range... idk its hard to say without knowing exactly how defense works.

EDIT

So with some testing Catar Stroke deviates from the normal formula similar to how energy bolt does. Do all the math then multiply by 1.1.

Also the attribute for catar stroke that deals 50% of your physical on pushed enemies is EXACTLY that, you do your atk/2 BUT, and here's the most interesting part, this damage IGNORES DEFENSE. I hit a level 108 enemy at 36 with 97 attack with catar did 1 damage, knocked it back, and it took 48 damage. The implications of this def ignoring value are fairly intrigueing

Concentrate adds FLAT damage on the end that never gets multiplied, so if you have +5 additional damage do the whole calculation (including crits) then slap on +5 at the end. Seems fairly pathetic... and if the monsters def is over your attack it reduces concentrate's damage as well. So if your formula adds up to -5 you do "0" damage but in the case of 0 you always round up to 1 for damage

Thrust's attribute to add additional hits 5% of the time adds (+12.5% final damage) two hits so essentially 25% damage

End Edit

magic seems to work the same, magic amplfication being similar to crit atk bonus but random. ranging from 15%~100% the mamp value so something like:

(matk+skillmatk)-mdef + 0%~100% of your m.amp

this was tested much less so it could potentally be 0%-100%... also mdef could be at the end and amp could be inside. don't have a magic class so i cant be entirely sure, just had someone do about 20 minutes of data gathering for me and thats what the results appear to show...

there are small margins of error with equipment on the formulas but they seem to work consistently without weapons. I dunno if def has more variables or if weapons do.

Edit: new formula 8/8/2015 8:38 pm

Extensively tested wizard's energy bolt. figured out energy bolt is:

(matk+skillatk-mdef)*1.5 if you add up both hits.

it only APPEARS random cause the damage splits randomly into two hits. it looks like the first hit is always bigger than the second unless you lag. out of like 200 casts only 2 appeared in reverse order. so its probably like 85%(matk+skillatk-def) then 35% for the second hit with something like 30% randomly split between the two?

There appears to be 0% error in this formula if you make sure to remove all rounding errors at the proper places.

End Edit

If you find these inaccuracies please submit the following:

first step, take off all gear that gives anything other than defense/evasion. so anything with dex/str/int, physical/magical attack, physical/magical damage, aoe ratio, crit atk, block penetration, magic amplification, and maybe even accuracy for good measure. make sure to check all your armor and accessories.

level and name of monster attack power without a weapon crit atk/magic amp with your weapon off how much damage you deal without a weapon (punch or cast something) crit damage without a weapon damage without a weapon with a buff (include buff's description) crit damage without a weapon with buff skill damage without a weapon same as above but when crit skill damage without a weapon with a buff (include buff's description) same as above but when crit skill's damage type (hit/slash/stab/element) ALL the above info WITH a weapon and include weapon description (attack value, upgrade, bonus stats) Make sure with a weapon to record damage values for like 30 minutes and submit them formatted like this:

low = 50

high = 100

low crit = 75

high crit = 150

then if you want include all the raw data below that so if you did 1000 attacks just give me all 1000 results, maybe for brevity write down each value that happens and just the number it happened so above example again

50 x 2

61 x 4

73 x 10

80 x 20

90 x 10

100 x 7

something like this would allow me to narrow down

## [GUIDE] Damage formulas

### [GUIDE] Damage formulas

Last edited by Dynemanti on August 10th, 2015, 10:49 am, edited 1 time in total.

### Re: [GUIDE] Damage formulas

Thank you for the research. What role does m.amp play in your final magic damage formula?

### Re: [GUIDE] Damage formulas

nice calculation... would target monster level and your level affects the damage output?

### Re: [GUIDE] Damage formulas

take the damage then add 0~M.AmpCrow wrote:Thank you for the research. What role does m.amp play in your final magic damage formula?

### Re: [GUIDE] Damage formulas

Not insofar as I have tested. But levels add both attack and def to you and the monster so your level will increase your atk and monster level will increase it's def. (not 1:1)akuzihs wrote:nice calculation... would target monster level and your level affects the damage output?

### Re: [GUIDE] Damage formulas

Very useful computation, I was actually looking for one this morning, regarding the Magic-based damage. Thank you!