MAPLESTORY · CALCULATOR
MapleStory Potential Expected Cost Calculator
Estimate average and confidence-based costs using reroll cost, target option rate, and pity limit.
LIVE CALCULATOR
Results update instantly as you edit values.
Average attempts43.37
Average expected cost520,440,000 mesos
50% confidence35 attempts
90% confidence cost1,200,000,000 mesos
How to use
- Check the target line rate and cost per reroll.
- Enter a hard pity count, or zero if none applies.
- Compare average, 50%, and 90% budgets.
Example
12M per roll, 2% target rate, 100-roll pity → about 43.37 rolls and 520M average cost
FAQ
Can I combine acceptable option rates?
Yes, if those outcomes are mutually exclusive, add their rates for the target probability.
Why can the 90% count equal pity?
The calculator caps the confidence count when guaranteed pity arrives first.
This unofficial fan tool is not affiliated with or endorsed by NEXON or MapleStory. Results are estimates based on values you enter.