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How does armor penetration works?


axtrimaitex
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100 damage at 30% armor pen. So 30% of 100 is 30. That 30 is applied directly to the enemy without mitigating damage due to armor. Then you have 70 damage left to apply to the armor. 70 multiplied by 30% from the armor is 21, the 21 is mitigated, so you then do 49 damage of the 70. In total doing 79(49+30) damage and leaving the opponent with 921 hp.

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I'm pretty sure. Armor penetration should affect all physical damage and critical strikes only effect auto attacks and certain abilities that specify on hit effects.

 

I'm not certain on the math behind armor penetration on critical strikes though lol.

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I'm pretty sure. Armor penetration should affect all physical damage and critical strikes only effect auto attacks and certain abilities that specify on hit effects.

 

I'm not certain on the math behind armor penetration on critical strikes though lol.

 

critical strikes are calculated after mitigation so;

 

100 damage at 30% armor pen. So 30% of 100 is 30. That 30 is applied directly to the enemy without mitigating damage due to armor. Then you have 70 damage left to apply to the armor. 70 multiplied by 30% from the armor is 21, the 21 is mitigated, so you then do 49 damage which happens to crit, crit dmg is dealt at 150?% of the 49 so =73.5 of the 70. In total doing 79(49+30) damage and leaving the opponent with 921 hp.

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crit damage is 60% of attempted damage. 90% if you have khali

 

if you have 100 wpn dmg, 30% Armor Pen, and 100% Crit chance//90% Crit Damage

 

and your attacking someone with 40 armor (33.1% Physical Resist)

 

This is the full damage calculation:

 

100 * 30% = 30 -> Weapon Damage Penetration

 

100 * 70% = 70 -> Weapon Damage

 

So you deal 70 "Weapon Damage" and 30 "Weapon Damage Penetration" to the target. Physical resist lowers that 70 wpn dmg to 46.82...

 

Then the crit function procs because you've dealt "Weapon Damage". This looks at the damage you attempted pre mititagion (70) and accounts for armor penetration.

 

70 / (100% - 30%) = 100

 

and then multiplies it by your crit damage (60% + 30%) to get

 

100 * (90%) = 90

 

At this point, the crit text tag pops up with "90!". However this then goes through the same Armor Penetration calculations

 

90 * 30% = 27 Crit Damage Penetration

90 * 70% = 63 Crit Damage

 

So you deal 63 "Crit Damage" and 27 "Crit Damage Penetration" to the target. Physical resist lowers that 63 Crit dmg to 42.15...

 

Thus in total you deal ~146 damage. Which if you notice is equal to 100*(190%)*(30%+70%*.99^40)

 

Armor penetration will never lower your damage out.

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sorry for confusion, armour penetration doesn't lower the damage when you crit

just fyi lifesteal works the same as crits

 

however im used to the old true dmg mechanic on AA which did infact lower crit dmg

im unsure if this is still true however for casters as argus crystal is true dmg

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