This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [OGURI CAP MASTERY] Uma Racing session. It will not click the shop.
Drop probability
Uma pull chance
Estimates the chance of at least one success across independent Uma pulls. Enter the percent from your banner. The 1.5 starter value matches the legendary rate published for the May-June 2026 roster, and each pull in those guides costs 250 Cash.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
The 1.5 default is the legendary rate printed with the May 1, 2026 and June 13, 2026 rosters, not a live banner readout. Those tables did not include an Epic band. Each pull was listed at 250 Cash. Change the percent to the rate shown in your shop.
![[OGURI CAP MASTERY] Uma Racing Calculator](/media/optimized/2ab13dc1dbf621fac6bcbcb7-960.webp)