Quote:

**Ballcoozy**:

but the way it scales another 100 AR is not another 100% more health unless my math is really terrible.

Yes, it is. Every point of armor is 1% health. So if you have 200 armor, you get +200% health (i.e. 100 + 100%), so for every 100 armor you do indeed get an additional +100% to base max health.

Damage Taken = Damage * 100 / (100 + Resist)

The above formula works for both armor & magic resist.

600 damage to someone with 0 armor = 600 damage (full damage)

600 damage to someone with 100 armor = 300 damage (1/2 damage)

600 damage to someone with 200 armor = 200 damage (1/3 damage)

600 damage to someone with 300 armor = 150 damage (1/4 damage)

This is a LINEAR scale, not diminishing returns. The thing people get confused about is that they see percents of damage taken instead of hits required. Using the above example, if I had 600 hp, it would take this many hits to kill me:

600 damage @ 0 armor = 1 hit to kill

600 damage @ 100 armor = 2 hits to kill

600 damage @ 200 armor = 3 hits to kill

600 damage @ 300 armor = 4 hits to kill

Notice the linear progression? With every 100 armor, I have to be hit an additional time to do the same amount of damage than if I did not have that 100 armor. Let's get a little more complicated. Let's say Master Yi is hitting you for 200 damage per hit, and you have 3000 hp:

200 damage @ 0 armor = 15 hits to kill (200 damage per hit)

200 damage @ 100 armor = 30 hits to kill (100 damage per hit)

200 damage @ 200 armor = 45 hits to kill (66.66 damage per hit)

200 damage @ 300 armor = 60 hits to kill (50 damage per hit)

It's linear. The first 100 armor you get is worth the exact same as the next 100 or the 100 after that. Every single point of armor is always worth the same.

Of important note also is that when you have a lot of armor, raising your max HP gives you even more bang for your buck, because each point of HP is actually worth (1 + (armor / 100)) HP.

If I had 1000 hp, and 100 armor, it would take 20 hits @ 100 damage to kill me. If I add 100 armor, it takes 30 hits to kill me (1000 HP / 33.33 damage = 30 hits). If I add 1000 HP instead, it now takes 40 hits to kill me (2000 HP / 50 damage = 40 hits).

You have to have a balance between armor, MR, and max HP. And then when you factor health regen into the equation as well that complicates things further. But I won't get into that.