Damage Simulator

Interactive damage theorycrafting for MapleStory Classic Worlds. Pick a class, a sub-job, and a weapon, tweak the baseline stats and buffs, and see live per-skill MIN/MAX damage against 1, 4, and 6 targets. Built on the verified attack range formula and the item database.

Work in progress · may be wrong

This damage simulator is a work in progress built from the information and in-game damage samples we have available today. Parts of it are reasonably well understood, other parts are provisional best-guesses fit to observed damage. It may be outright wrong in some aspects. Numbers are directionally useful for comparing weapons, skills, and builds, but should not be treated as gospel. MeowDB will update the simulator as more data surfaces and empirical testing is conducted.

Known gaps in the current version: Magician spells are excluded because the magic formula has not been verified for Classic Worlds. Lucky Seven is included but uses a provisional LUK-only formula flagged with an Unverified badge. Crit is applied in the Avg w/ crit column using 1 + (rate × dmg) where total crit damage includes the innate +20% base all classes get. Monster defense, elemental advantage, and post-formula buffs are not modeled. Swing vs stab tagging on ambiguous skills is based on old MapleStory conventions and could be wrong for Classic. The physical formula and the provisional Lucky Seven formula are both documented in Explaining the Damage Formula. Spot a bug or have data to share? Ping the MeowDB Discord.

Filters

Class

Sub-job

Weapon

Swing 2.5 / Stab 2.5 · Normal

Baseline character

Level50

Stats auto-fill for a 4 primary / 1 secondary split. Override below.

STR (primary)

DEX (secondary)

+W.ATK (gear)

Gloves, scrolls, potions.

Crit rate / dmg (%)

Dmg defaults to 20% base + passives.

Mastery level (base)10

0 = 1st job, 10 = maxed 2nd job weapon mastery. Passive overrides also apply.

Passives & buffs

Sword Mastery (max)

Mastery lv 10, +20 Accuracy. No AP bonus.

Rage (max, active buff)

+35 AP buff, -20 WDEF for 300s.

+35 AP

Active assumptions

Class

Fighter

Weapon

Lion's Fang

Level

STR / DEX

200 / 50

WeaponAttack (outer)

AttackPower (flat)

+35

Mastery

lv 10

Crit (applied to Avg w/ crit column)

0% crit rate, +20% crit dmg · multiplier = 1.000x

Sanity check · Power Strike output under current config: 1,101 to 1,247 per hit.

Damage by skill

3 skills for Fighter on Lion's Fang. Click a column to sort.

Skill	Coef	Hits	Cap	Min / hit	Max / hit	Avg / cast↓	Avg w/ crit	vs 1T	vs 4T	vs 6T
Power Strike 260% single-target, maxed at lv 20.	260%	1	1	1,101	1,247	1,174	1,174	1,174	1,174	1,174
Slash Blast 130% to up to 4 mobs.	130%	1	4	551	623	587	587	587	2,348	2,348
Final Attack: Sword 35% proc on hit. Up to 3 enemies.	180% ×0.35	1	3	267	302	284	284	284	853	853

Skill

Coef

Hits

Cap

Min / hit

Max / hit

Avg / cast↓

Avg w/ crit

vs 1T

vs 4T

vs 6T

Power Strike

260% single-target, maxed at lv 20.

260%

1,101

1,247

1,174

Slash Blast

130% to up to 4 mobs.

130%

551

623

587

2,348

Final Attack: Sword

35% proc on hit. Up to 3 enemies.

180% ×0.35

267

302

284

853

Avg / cast is the raw per-hit average times hits-per-cast (no crit applied). Avg w/ crit multiplies Avg/cast by 1 + (critRate × critDmg) to give the expected value with crit rolled in. vs 1/4/6T is the crit-adjusted per-cast damage times min(targets, mob cap). Min and Max per hit stay raw. Final Attack rows already have the 35% proc rate baked in.

Crit model: every class has an innate +20% crit damage base. Passive bonuses stack on top (Critical Shot +15, Critical Throw +35, Dagger Mastery +0). Crit rate is purely from passives (Archer Critical Shot 20%, Assassin Critical Throw 15%, Bandit Dagger Mastery 20%). Total crit damage shown in the input box already includes the 20% base. A crit multiplies the normal rolled value by (1 + critDmg%), it does NOT force a MAX roll. Bandit's Dagger Mastery is a real damage boost here (crit rate × 20% base crit dmg = real contribution) even without a passive crit dmg bonus.