Probability and EV
Standard payout, no special zero rule.
Straight up · 2.70% win probability · 2.70% edge$13.51theoretical loss on $500.00 total action
Table games · interactive calculator
Roulette Probability and Payout Calculator.
Calculate hit probability, fair odds, casino payout, and house edge for common roulette wagers and wheel types.
How this calculator works
Probability is winning pockets ÷ total pockets. A straight-up bet on a 37-pocket wheel wins 1/37 of the time while paying 35:1.
Assumptions and limits
Choose the actual wheel and any special zero rule. Betting systems do not change the underlying pocket probabilities.
Interpretation: Calculator results are long-run mathematical estimates under the entered assumptions. They are not session predictions, guarantees or recommended loss limits.