This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [NEW MAP] BloxStrike session. It will not click the shop.
Drop probability
At-least-once chance
Enter a percent you already know and a number of tries. The form estimates the chance of succeeding at least once. It does not read your inventory and it does not know BloxStrike case odds.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
This estimates the chance of at least one success in independent repeats. The 10 percent default is only an example input. The official BloxStrike page does not publish case or Trade Up odds, so do not treat the default as a drop rate.
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