MapleStory Classic World
MapleStory Classic World accuracy calculator
Work out your hit chance against a monster and how much more accuracy you need for a 100% hit. Pick a monster from the list or enter its level and avoid yourself.
Your character
Use the stat totals shown in your character window. Extra accuracy is added directly to total accuracy.
Target monster
Lv.55, avoid 33 · Malady stats
Result
- Base accuracy
- 46
- Total accuracy
- 46
- Hit chance
- 0.0%
- ACC needed for 100%
- 213
- Still missing
- 167
You need 167 more accuracy for a 100% hit chance against this monster.
How the numbers are calculated
- Base accuracy uses C = 1.2 × DEX + 2 × level + 0.6 × LUK. Beginner: floor(C ÷ 2.5 + 5). Warrior: floor(C ÷ 2.5 + 10). Bowman: floor(C ÷ 4.8 + 20). Thief: floor(C ÷ 4 + 15). Magician: floor((1.2 × INT + 2 × level + 0.6 × LUK) ÷ 5.1 + 20).
- Total accuracy is base accuracy plus the extra accuracy you enter.
- With L as the monster level minus your level (never below 0), adjusted accuracy A = total × 100 ÷ (10L + 255). Avoid of 0 always hits. If A − avoid reaches 25 + L × (0.5 × level + 15) the hit chance is 100%. Otherwise f = 0.15 + 0.2 ÷ (1 + e^((A − avoid) ÷ 12)) and the chance is (1 + f − avoid ÷ A) ÷ (2f), limited to 0–100%.
- ACC needed for 100% is the smallest whole-number total accuracy that reaches a 100% hit chance.
Source: the meowdb formulas page and the henesys.gg accuracy calculator, which we compared on 2026-10-29 and found identical. This is not an official Nexon formula and it has not been tested in game, so treat it as a planning aid.
- How is accuracy calculated in MapleStory Classic World?
- Base accuracy comes from your job, level and stats (DEX for most jobs, INT for magicians, plus LUK). Equipment, potions and skills add to it. The result is compared with the monster's avoid and level to get your hit chance.
- Is this the official formula?
- No. It follows the formulas on the meowdb formulas page and the henesys.gg accuracy calculator, which we compared on 2026-10-29 and found identical. It is not an official Nexon formula and we have not verified it in game.
- What does 'ACC needed for 100%' mean?
- It is the smallest total accuracy (base plus extra) at which the formula gives a 100% chance to hit that monster at your level.