Auto Roulette Bonus probability calculator
Straight-up 0 lands on 2.70% of Auto Roulette rounds (1 in 37). Pick an outcome and a number of rounds to see the odds, the average wait and how unusual the current drought is.
Formulas: P(at least one in N) = 1 - (1 - p)^N; average wait = 1 / p; P(wait ≥ k) = (1 - p)^k.
Theoretical p = the published rules; source: content-src/guides/auto-roulette/rtp.md.
Each round is independent: past results do not change the next round's odds, and no wait makes an outcome "due". Theoretical figures come from the provider's published rules; observed figures come from our own tracker and change as rounds arrive. 18+. Past results do not predict future outcomes. Play with money you can afford to lose.
Frequently asked questions
- What are the odds of Straight-up 0 on a single Auto Roulette round?
- 2.70% per round, or about 1 in 37. Every round is independent, so this number never changes with what came before.
- How many Auto Roulette rounds until Straight-up 0 is likely?
- On average one hit every 37 rounds; half of all waits are over within 26 rounds. For a 90% chance of at least one hit you need 85 rounds, for 99% about 169.
- Is Auto Roulette "due" a Straight-up 0 after a long wait?
- No. A wait of 120 rounds without Straight-up 0 happens 3.7% of the time from any starting point, and the next round still has the same 2.70% chance. The calculator tells you how unusual a wait is, not that a hit is coming.
- Where do the theoretical and observed numbers come from?
- Theoretical odds use the published rules (content-src/guides/auto-roulette/rtp.md). Observed figures come from the rounds our tracker has recorded and change as new rounds arrive.
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