Probability planning tool

Neo Tennis Lucky Spin Calculator

Enter a drop rate you trust to calculate expected Spins, confidence thresholds, and your chance of getting at least one hit.

Your inputs

Calculate Lucky Spin odds

Enter the drop rate you want to plan around. Neo Tennis does not publish an official Style drop table, so this tool does not guess one for you.

Target drop rate%Use a rate from a source you trust or your own test data.Spins you plan to usespins

Average to first hit100spins

50% chance at69spins

90% chance at230spins

99% chance at459spins

Chance within 100 spins63.4%

How the calculation works

For a per-spin chance p, the chance of getting at least one hit within n independent spins is 1 − (1 − p)ⁿ. Results are probability estimates, not a guarantee.