Roulette Odds Calculator
Exact probabilities, expected values, and house edge for all 10 roulette bet types. Toggle between European and American wheels to see how the extra zero affects your odds.
Last updated: March 28, 2026
Wheel Type
House edge: 2.703%
Equal house edge across all bets
On a single-zero (European) wheel, every bet type has the same house edge of 2.703%. Higher payouts mean lower probability, not better expected value.
All Bet Types — European (37 pockets)
| Bet Type | Category | Payout | Numbers | Probability | EV / $1 | House Edge |
|---|---|---|---|---|---|---|
| Inside Bets | ||||||
Straight Up | Inside | 35:1 | 1 | 2.70% | -0.027 | 2.703% |
Split | Inside | 17:1 | 2 | 5.41% | -0.027 | 2.703% |
Street | Inside | 11:1 | 3 | 8.11% | -0.027 | 2.703% |
Corner | Inside | 8:1 | 4 | 10.81% | -0.027 | 2.703% |
Six Line | Inside | 5:1 | 6 | 16.22% | -0.027 | 2.703% |
| Outside Bets | ||||||
Dozen | Outside | 2:1 | 12 | 32.43% | -0.027 | 2.703% |
Column | Outside | 2:1 | 12 | 32.43% | -0.027 | 2.703% |
Red/Black | Outside | 1:1 | 18 | 48.65% | -0.027 | 2.703% |
Even/Odd | Outside | 1:1 | 18 | 48.65% | -0.027 | 2.703% |
High/Low | Outside | 1:1 | 18 | 48.65% | -0.027 | 2.703% |
Wheel Coverage Visualizer
Covered (red)Covered (black)Not covered
Streak Probability Calculator
Probability of 5 consecutive losss3.5707%
1-in-N chance1 in 28
Expected spins to win (avg)2.06
Streaks are not patterns
Each spin is independent. A streak of 10 reds does not make black “due.” The probability of the next spin is always the same regardless of history.