Gacha Pity Calculator
Pull odds from rates you enter — nothing hardcoded per game.
Chance within 50 pulls
63.58%
Expected pulls to success
43.369
Chance of missing
36.42%
Hard pity is applied: success is guaranteed by the pity pull if it has not occurred sooner.
What is this tool?
Estimates the probability of obtaining a desired item within N pulls and the expected number of pulls to succeed, using a base drop rate and an optional hard pity threshold that you supply. Nothing is hardcoded from any title’s published rates — look up the numbers for the gacha-style game you play and enter them here. Soft pity (rising rates near the threshold) is not modeled; use an effective average rate if your system works that way. Not affiliated with any specific game or publisher.
How to use it
- Enter the published base drop rate (%) for the item you want.
- Optionally enable hard pity and enter the guarantee threshold in pulls.
- Set how many pulls to evaluate and read cumulative chance and expected pulls.
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