Odds Calculator
Chance of getting a rare drop across multiple tries.
Your inputs
Results
Chance of at least one in 100
86.74%
Per-attempt chance
2.000%
Expected attempts
50
Attempts for 50%
35
Attempts for 90%
114
Attempts for 99%
228
Assumes independent tries at a constant drop rate. “Expected attempts” is the average; you can get lucky far sooner or need many more — it's not a guarantee.