Armor & EHP
Turn armor and magic resist into real damage reduction and effective HP — and see what one more resist point is actually worth.
Physical damage reduction
50.0%
33.3%
magic reduction
100
armor
50
magic resist
Effective HP · physical
4,000
Effective HP · magic
3,000
Right now, +1 armor ≈ +20.0 effective HP vs physical, and +1 MR ≈ +20.0 vs magic. Resist scales linearlywith your HP — that’s why HP + resist together is so strong.
Reduction = R ÷ (100 + R). Negative resist (shred) amplifies damage instead. Effective HP is how much raw damage of that type you can eat.