Catch a Brainrot · Tool
Active calculator
Catch a Brainrot Drop Chance Calculator
Calculate the chance of catching at least one target within n attempts using your observed rate.
Results
- At least one success
- —
- No success (dry run)
- —
Attempts for confidence targets
| Confidence | Expected attempts |
|---|
How to use
- Enter catch/drop percent per attempt.
- Enter how many attempts you will run.
- Plan session length from 90% / 95% confidence rows.
Formula
P(at least one) = 1 − (1 − p)^n
P(at least one) = 1 - (1 - p)^nExamples
2.5% rare catch, 80 tries
P(at least one) ≈ 86.7%.
User-supplied rates only. Not official game math.
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