Roulette Odds & Payouts Calculator (2025)
Understanding roulette odds is essential for making informed betting decisions. This guide covers every bet type, payout, and probability for both European and American roulette.
House Edge Comparison
| Wheel Type | Numbers | House Edge |
|---|---|---|
| European | 37 (0-36) | 2.70% |
| American | 38 (0, 00, 1-36) | 5.26% |
| French (La Partage) | 37 | 1.35% |
Key insight: American roulette's extra 00 nearly doubles the house edge. Always choose European when available.
Complete Odds & Payout Table
Inside Bets
| Bet Type | Numbers Covered | Payout | European Odds | American Odds |
|---|---|---|---|---|
| Straight Up | 1 | 35:1 | 2.70% | 2.63% |
| Split | 2 | 17:1 | 5.41% | 5.26% |
| Street | 3 | 11:1 | 8.11% | 7.89% |
| Corner/Square | 4 | 8:1 | 10.81% | 10.53% |
| Five Number* | 5 | 6:1 | N/A | 13.16% |
| Six Line/Double Street | 6 | 5:1 | 16.22% | 15.79% |
*Five number bet (0-00-1-2-3) only available on American wheels. House edge is 7.89%—the worst bet in roulette!
Outside Bets
| Bet Type | Numbers Covered | Payout | European Odds | American Odds |
|---|---|---|---|---|
| Red/Black | 18 | 1:1 | 48.65% | 47.37% |
| Odd/Even | 18 | 1:1 | 48.65% | 47.37% |
| High (19-36)/Low (1-18) | 18 | 1:1 | 48.65% | 47.37% |
| Dozens (1-12, 13-24, 25-36) | 12 | 2:1 | 32.43% | 31.58% |
| Columns | 12 | 2:1 | 32.43% | 31.58% |
How Payouts Are Calculated
The payout formula: (36 ÷ numbers covered) - 1
Examples:
- Straight up: (36 ÷ 1) - 1 = 35:1
- Split: (36 ÷ 2) - 1 = 17:1
- Corner: (36 ÷ 4) - 1 = 8:1
Why the house wins: On a European wheel with 37 numbers, true odds for a straight up bet should be 36:1. The casino pays 35:1, keeping the difference.
Expected Value Per $100 Bet
| Bet Type | European EV | American EV |
|---|---|---|
| Any standard bet | -$2.70 | -$5.26 |
| Five number bet | N/A | -$7.89 |
| La Partage (even money) | -$1.35 | N/A |
Over time, you'll lose approximately this amount per $100 wagered.
Probability Calculations
Hitting Specific Numbers
| Scenario | European | American |
|---|---|---|
| Hit your number once in 37 spins | 63.4% | 63.2% |
| Hit your number twice in 37 spins | 26.8% | 26.4% |
| Never hit in 37 spins | 36.6% | 36.8% |
| Never hit in 100 spins | 6.5% | 7.0% |
Consecutive Outcomes
| Consecutive Results | Probability |
|---|---|
| 2 reds in a row | 23.7% |
| 3 reds in a row | 11.5% |
| 5 reds in a row | 2.7% |
| 10 reds in a row | 0.07% |
Remember: Each spin is independent. After 10 reds, the next spin is still 48.65% red on European wheels.
Comparing Bet Quality
All standard bets have the same house edge (2.70% European, 5.26% American). The difference is volatility:
Low Volatility (Grind it out)
- Even money bets (red/black, odd/even)
- Win frequently, small amounts
- Bankroll lasts longer
High Volatility (Big swings)
- Straight up bets
- Win rarely, large amounts
- More exciting, faster bankroll fluctuations
Medium Volatility
- Dozens, columns
- Balance of frequency and payout
The Mathematics of Zero
The zero (and 00 on American wheels) is how the casino profits:
European wheel:
- 18 red + 18 black + 1 green = 37 numbers
- Red/black covers 18/37 = 48.65%
- Missing 2.70% is the house edge
American wheel:
- 18 red + 18 black + 2 green = 38 numbers
- Red/black covers 18/38 = 47.37%
- Missing 5.26% is the house edge
Special Rules That Improve Odds
La Partage (French Roulette)
When zero hits on even-money bets:
- You get half your bet back
- Reduces house edge to 1.35%
- Only available at select casinos
En Prison (French Roulette)
When zero hits on even-money bets:
- Your bet is "imprisoned" for next spin
- If your bet wins next spin, you get it back (no profit)
- Also reduces house edge to 1.35%
Combination Bet Odds
Covering 2/3 of the Board
Betting two dozens ($10 each):
- Win probability: 64.86% (European)
- Win amount: $10 (win one, lose one)
- Loss amount: $20 (when third dozen hits)
- Expected value: -$2.70 per $20 bet
Covering Numbers with Straight Bets
Five straight-up bets of $2 each ($10 total):
- Win probability: 13.51% (European)
- Win amount: $60 ($70 payout - $10 wagered)
- Loss amount: $10
- Expected value: -$0.27 per $10 bet
Same house edge, different experience.
Common Misconceptions
"Numbers Are Due"
Myth: If black hasn't hit in 20 spins, it's more likely next. Reality: Every spin has the same probability regardless of history.
"Dealers Can Control the Ball"
Myth: Skilled dealers can aim for certain sectors. Reality: Modern wheels are precision instruments. Even tiny biases are quickly detected and corrected.
"Betting Systems Change the Odds"
Myth: Martingale/Fibonacci/etc. beat the house. Reality: No betting pattern changes the mathematical expectation.
Related Guides
- Learn betting systems: Roulette Strategy
- Compare wheel types: Roulette Variations
- Complete rules: Roulette Guide
Frequently Asked Questions
The Bottom Line
Every standard roulette bet has the same house edge. Choose bets based on your preferred volatility and entertainment value, not because you think one is "better." And always pick European over American roulette—the math doesn't lie.
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