This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [🐦⬛HALLOWEEN PART 2] Project Baki session. It will not click the shop.
Drop probability
At-Least-Once Drop Chance
Estimates the chance of at least one success when you already know a drop percentage and you choose how many attempts to plan. Use it for chance style drops such as the wandering bosses. It does not read your inventory or look up a live rate.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
The 10% chance and 10 attempts are only example inputs so the form can render. They are not a Project Baki drop rate. Replace them with a percentage you already have from a trainer, board card, or patch note.
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