GACHA PROBABILITY · CALCULATOR
Gacha Probability and Pity Calculator
Calculate acquisition chance, pulls to a target confidence, hard pity, and total cost.
Chance within plan39.5%
Pulls to target60
Planned cost8,000
Cost to target9,600
How to use
- Check the required values in your game client.
- Enter the latest values into each field.
- Review the automatically updated result.
Example
1% rate over 50 pulls → about 39.5% chance of at least one copy
FAQ
How is probability calculated?
It uses 1-(1-rate)^pulls for independent attempts and returns 100% when hard pity falls within the plan.
Does it include soft pity or featured-item guarantees?
This version supports a fixed rate and hard pity, not tiered rates or carry-over guarantees.
This unofficial fan tool is not affiliated with or endorsed by the publisher of Gacha Probability.