American roulette carries a 5.26% house edge, while European roulette runs at 2.70%. That gap comes from one thing: the extra 00 pocket on the American wheel. It’s the single most important number in this article, because it determines which bets are worth making and which version of the game you should be playing in the first place.
None of this is new information, and it hasn’t changed. What’s worth clarifying is what this knowledge actually does for you. Understanding roulette odds and payouts won’t overcome the house edge — no amount of study changes the math built into the wheel. What it does is let you pick bets that match your risk tolerance, avoid the worst wagers on the table, and manage your bankroll with realistic expectations instead of guesswork.
Understanding Roulette Odds and Payouts
Roulette odds describe the probability of a given bet winning; payouts describe what the casino pays you when it does. The two are related but not equal — payouts are always set slightly below the “true” odds, and that gap is where the house edge lives.
What are odds in roulette?
European roulette uses 37 pockets: numbers 1 through 36 plus a single zero. American roulette adds a second zero pocket (00), bringing the total to 38. That single extra pocket is why American roulette’s house edge sits at 5.26%, compared to 2.70% on the European wheel.
A straight-up bet on European roulette wins on 1 of 37 spins, a 2.70% probability. On American roulette, the same bet wins on 1 of 38 spins, a probability of roughly 2.63%. The payout stays 35:1 in both cases — the casino doesn’t adjust the payout for the extra pocket, which is exactly how the added house edge gets built in.
How to calculate roulette payouts
Payout ratios are written as x:1. A straight-up bet pays 35:1, so a $10 bet returns $350 in winnings plus your original $10 back. A split bet, covering two adjacent numbers, pays 17:1 — a $10 bet returns $170 in winnings plus your stake. A street bet, covering three numbers in a row, pays 11:1, returning $110 in winnings on a $10 bet.
The general formula behind these numbers is (36 ÷ number of squares covered) − 1. Fewer numbers covered means a higher payout ratio, because the odds of winning are worse.
Different bet types and their payouts
- Straight-Up Bet: Pays 35:1. Win probability is 2.70% on European roulette, about 2.63% on American roulette.
- Split Bet: Covers two numbers, pays 17:1.
- Street Bet: Covers three numbers in a row, pays 11:1.
- Corner Bet: Covers four numbers, pays 8:1.
- Six-Line Bet: Covers six numbers across two rows, pays 5:1.
- Five-Number Bet (American only): Covers 0, 00, 1, 2, and 3, pays 6:1. This bet exists only on the double-zero wheel and carries the worst house edge in the game, at 7.89%, because it doesn’t divide evenly into the payout structure the way other bets do.
- Column and Dozen Bets: Each cover 12 numbers and pay 2:1.
- Even-Money Bets (red/black, odd/even, high/low): Pay 1:1. On European roulette these win on 18 of 37 numbers, a 48.65% probability.
| 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 | 4 | 8:1 | 10.81% | 10.53% |
| Six-Line | 6 | 5:1 | 16.22% | 15.79% |
| Five-Number (American only) | 5 | 6:1 | — | 13.16% |
| Column/Dozen | 12 | 2:1 | 32.43% | 31.58% |
| Even-Money | 18 | 1:1 | 48.65% | 47.37% |
European vs. American Roulette: The House Edge Difference
The core difference between the two versions is the wheel itself. European roulette has one zero pocket and a 2.70% house edge. American roulette has both a single and a double zero, pushing the house edge to 5.26% — nearly double. That extra pocket doesn’t change any payout on the board; it only lowers your probability of winning every single bet type, which is why the house edge rises.
This holds true across bet types. A straight-up bet wins 2.70% of the time on a European wheel versus roughly 2.63% on an American wheel. Even-money bets like red/black win 48.65% of the time in European roulette versus 47.37% in American roulette. Neither gap is dramatic on its own, but it compounds over many spins.
The practical takeaway hasn’t changed and doesn’t need dressing up: if a casino offers both versions, European roulette is the better game mathematically, purely because of the single zero. This is a rule-set fact, not a strategy tip — no betting system changes which wheel has the lower edge.
Roulette Payout Chart: Inside Bets vs. Outside Bets
Roulette bets split into two broad categories, and the split matters more than any individual payout number.
Inside bets
Inside bets are placed directly on numbers or small groups of numbers on the interior of the layout: straight-up, split, street, corner, and six-line. They pay more because they win less often. A straight-up bet’s 35:1 payout looks attractive, but it only hits once every 37 spins on average in European roulette.
Outside bets
Outside bets cover larger groups: red/black, odd/even, high/low, columns, and dozens. Even-money outside bets pay 1:1 and win close to half the time (48.65% in European roulette). Column and dozen bets pay 2:1 and win around 32%. These bets produce smaller, more frequent payouts rather than rare large ones.
Neither category beats the house edge — the expected return is the same regardless of which bets you choose, because payouts are calibrated to the odds in every case except the American five-number bet, which is worse than the table average. The choice between inside and outside bets is really a choice about variance: how much you want your bankroll to swing from spin to spin, not a choice about long-run profitability.
How to Calculate Roulette Odds
To work out the odds for any bet, divide the number of winning outcomes by the total number of pockets. European roulette has 37 pockets; American roulette has 38.
- Straight-Up Bet: 1 ÷ 37 = 2.70% (European); 1 ÷ 38 ≈ 2.63% (American). Payout: 35:1.
- Split Bet: 2 ÷ 37 ≈ 5.41% (European); 2 ÷ 38 ≈ 5.26% (American). Payout: 17:1.
- Street Bet: 3 ÷ 37 ≈ 8.11% (European); 3 ÷ 38 ≈ 7.89% (American). Payout: 11:1.
- Corner Bet: 4 ÷ 37 ≈ 10.81% (European); 4 ÷ 38 ≈ 10.53% (American). Payout: 8:1.
- Column/Dozen Bet: 12 ÷ 37 ≈ 32.43% (European); 12 ÷ 38 ≈ 31.58% (American). Payout: 2:1.
The pattern is consistent: every bet type wins slightly more often on the European wheel than the American wheel, because the European wheel has one fewer losing pocket. Payouts don’t adjust for this, so the house edge is baked into the wheel design rather than the payout table.
Roulette Payout Calculators
Payout calculators let you enter a bet type, stake, and roulette version to see the potential return and win probability without doing the arithmetic by hand. Most support the standard bet categories — straight-up, split, street, corner, six-line, column, dozen, and even-money — across both European and American rule sets.
These tools are useful for two things: quickly checking what a given bet would return if it wins, and comparing the win probability of different bets side by side before you commit chips. They don’t predict outcomes and don’t improve your odds — they just make the existing math easier to see.
Roulette Betting Strategies: What They Actually Do
Progressive betting systems are popular in roulette discussion, and they’re worth understanding on their own terms: they change how you distribute wins and losses across a session, not the underlying house edge.
Martingale System
You double your bet after every loss, so a single win recovers all prior losses in the sequence plus a small profit. A $10 bet that loses becomes a $20 bet, then $40, and so on. It’s typically applied to even-money bets like red/black, which sit near 48.65% in European roulette. The system requires a large bankroll and a high table limit to survive a long losing streak, and it does not change the 2.70% or 5.26% house edge working against you on every spin.
Fibonacci System
Bets follow the Fibonacci sequence (1, 1, 2, 3, 5, 8, 13…), increasing one step after a loss and dropping back two steps after a win. It escalates more slowly than Martingale, which limits how fast losses compound, but it’s still a staking pattern layered on top of the same fixed odds and payouts.
Labouchere System
You start with a sequence of numbers (for example, 1-2-3-4-5) and bet the sum of the first and last numbers. A win cancels those two numbers; a loss adds the lost amount to the end of the sequence. It’s more flexible than Martingale or Fibonacci but requires careful tracking and, like the others, doesn’t touch the house edge.
None of these systems are secret advantages — they’re bankroll management approaches. They redistribute risk across a session rather than improving the probability of any individual bet.
Practical Tips for Playing Roulette
- Choose European roulette when available. A 2.70% house edge is meaningfully better than American roulette’s 5.26%, and this is true regardless of which bets you place.
- Know your bet before you place it. Inside bets (straight-up, split, street, corner) offer larger payouts with lower win probability. Outside bets (red/black, odd/even, high/low, columns, dozens) offer smaller payouts with higher win probability. Neither is objectively better — they suit different risk preferences.
- Avoid the American five-number bet. At a 7.89% house edge, it’s worse than every other standard bet on the table.
- Set win and loss limits before you sit down. Betting systems like Martingale can extend a session but require a bankroll large enough to absorb a losing streak.
- Use a payout calculator to compare bets before committing chips, especially if you’re switching between European and American tables.
Conclusion
The fundamentals of roulette odds and payouts are stable and well documented: European roulette’s single zero gives it a 2.70% house edge, while American roulette’s extra 00 pocket pushes that to 5.26%. Standard payouts — 35:1 for straight-up, 17:1 for split, 11:1 for street, 8:1 for corner, 2:1 for dozens and columns, 1:1 for even-money bets — haven’t changed, and the American five-number bet at 6:1 remains the weakest wager on the table at a 7.89% house edge.
Knowing this doesn’t give you an edge over the casino. What it gives you is the ability to choose the version of the game and the bets that fit how you want to play, understand what a win actually pays before you place a chip, and manage a bankroll with realistic expectations rather than illusions about beating the math.
