MapleStory M Damage Calculator
Enter your stats from the in-game stat window to see your mob and boss damage side by side — normal, critical and average per hit, with the level penalty, boss defense and food buffs factored in. Test a stat change before you spend mesos; your inputs are saved in your browser.
NormalNormal monsters — average hit
1954587
635,972 – 2,689,527
Normal
635972
Critical
2530534
BossBoss — average hit
1831314
595,862 – 2,519,902
Normal
595862
Critical
2370937
Boss damage breakdown
Character setup
My stats
Physical class
Input base stats here. Exclude any food buffs & party buffs. Include self buffs.
Skill
Nodes
Final Def Ignore Rate: 2.40% — sources stack multiplicatively, then reduce the boss's defense (PDR).
Target
These only affect the boss damage — mob damage skips the level and defense reductions.
Modifiers
Hyper skill bonuses only, stacked on top of your base stats. Self and party buffs belong in your base stats; food gets its own section.
Food
Regular food buffs are mutually exclusive per effect — picking a second food of the same stat replaces the first. Different stats can be combined.
These stack with the regular buff and with each other.
More tools
Nexon's official flame tables, made interactive. Pick the options you want and see your real chance per flame — and how many flames it takes to get there.
Cube probabilities →Potential and bonus potential odds for every equipment part and rank, with the cubes needed to hit the lines you want.
Guide
- How is damage calculated in MapleStory M?
- A hit is Attack × (1 + Damage %) × (1 + Attack %) × Skill % × (1 + Final Damage %). Against bosses, Boss Attack % × Skill % is added into the Attack % bracket, and the result is further reduced by the level-difference modifier and the boss's defense (PDR) after your Ignore Defense. The formulas come from the community Damage & Emblem Calculator spreadsheet, verified by in-game testing and datamined defense values.
- Why is my boss damage so much lower than my mob damage?
- Two reductions apply only to bosses: a level-difference modifier based on datamined defense ratings (fighting above your level cuts damage hard), and the boss's defense (PDR), which removes a share of your damage unless you stack Def Ignore Rate. Expand 'Boss damage breakdown' in the results card to see each stage.
- Should I prioritize Critical Rate or Critical Damage?
- They scale off each other: Critical Damage does nothing without Critical Rate, and vice versa. Crits also roll a random 0–50% bonus on top of your Crit Damage — the calculator shows the min, midpoint and max of that roll. Compare your average hit before and after a stat change to decide.
- How does Def Ignore Rate (IED) work?
- Def Ignore Rate shrinks the damage reduction from a boss's defense (PDR). Sources stack multiplicatively, not additively: your stat window DIR, Node IED (+15% once the skill's node reaches Lv 40) and Defense Smash 4 (+25%) combine as 1 − (1−a)(1−b)(1−c).
- Do food buffs stack in MapleStory M?
- Regular food buffs are mutually exclusive per effect — eating a second food of the same stat replaces the first, though different stats combine. A few special items (Boss Rush Boost Potion, Noodle Soup With Mushroom, Stir-Fried Pork, Escargot, Cold Jellyfish Salad) stack with the regular buff and each other. The Food section models exactly this.