Damage calculator
An attacker, a defender, a hit: what gets through the defense, how many hits it takes to kill and the effective HP.Learn more
Pick heroes and their items, or type the stats you read in a match.
Attacker
Items
Defender
Items
The hit
Physical damage equal to the attacker's total physical attack, and its critical strike if it has crit chance.
Result
Choose an attacker, or type their stats: every field needs a valid number.
How it works
The remaining defense follows the game's order: percentage penetration first, then flat penetration, that is defense × (1 − penetration %) − flat penetration. The result can drop below 0, down to −60 and no further: flat penetration then adds damage. Only the penetration of the hit's type, physical or magic, counts.
Damage taken is raw damage × 120 ÷ (120 + remaining defense): 120 defense lets half the damage through, −60 doubles it. True damage ignores defense and penetration. Hits to kill round HP ÷ damage up to the next whole number; effective HP, HP × (120 + remaining defense) ÷ 120, is the raw damage needed to kill.
A basic attack deals physical damage equal to the total physical attack; a critical strike deals the crit damage, 200% by default, and the average weighs both by the crit chance. Heroes whose passive changes their basic attack are not modelled. A hero's stats come from the build simulator: levels between 1 and 15 interpolated, emblem without talents, conditional item passives not counted.
Skills are not calculated: our skill data gives ranges across skill levels without saying which level matches which value, and barely one in ten carries a scaling. For a skill, read its raw damage in the game and enter it as “Raw damage”. Base attack speed is missing too: no damage per second.