Crit Damage Multiplier Calculator

How it is calculated

The tool gives the long-run average damage per hit, mixing normal hits and critical hits. average = base × (1 + chance/100 × (mult − 1)). base is the damage of a normal hit, chance is the critical chance in percent (35 means 35%), and mult is the total multiplier of a crit, so 2 means a crit deals double damage. The (mult − 1) part is the extra damage a crit adds. Also shown: effective multiplier = average ÷ base and crit contribution = average − base. Base and mult must be above zero and the chance cannot be negative. The chance is not capped at 100, so a value above 100 simply keeps scaling the result, even though a real game would stop at 100%.

Common mistakes

• Entering the crit multiplier as the bonus. If your gear says +150% crit damage, the multiplier is 2.5, not 1.5.
• Typing the chance as a fraction, such as 0.35, instead of a percent. The tool would read it as 0.35% and show almost no effect.
• Expecting the average to be the damage you see on any single hit. Hits are either normal or crit; the average only shows up over many hits.
• Entering a crit chance above 100 because several stats add up. Most games cap crit chance at 100%, but this tool does not, so the result is then too high.
• Entering a multiplier below 1, which makes crits weaker than normal hits and gives an average below the base.