Talk:Armor/@comment-78.52.243.127-20111006190551/@comment-94.247.97.4-20111028105746

The maths is a bit different than you attempted. 500 armor = 100/(100+500) = 0.2 damage received A 1000pdmg attack will therefore do 166-7 pdmg. A champion with 1000 can take 6 such attacks before death OR 500amor = 500% effective health. A champion with 1000 health has an effective 6000 health against physical damage. A champions can take 6 such attacks before death.

For some people (such as me) it is a easier way to visualize the effectiveness of your armor without dipping into fractions and percentage of damage.