The odds of winning at roulette depend on the type of bet and the version of the game being played. Inside bets, like picking a single number, have low odds—1 in 37 or 1 in 38—but offer large payouts. Outside bets have higher winning chances but smaller returns.
Understanding these probabilities helps players make informed decisions and manage expectations. This guide breaks down the exact odds for each bet, compares European and American wheels, and explains how the house maintains its edge.
Straight-up bets on a single number have a 2.70% chance in European roulette (1 in 37) and 2.63% in American (1 in 38). Despite the slim odds, they pay 35 to 1, making them attractive for high-risk players.
Split bets (two numbers) increase the chance slightly to 5.41% in European and 5.26% in American. Street bets (three numbers) offer 8.11% and 7.89% odds respectively. These are still low-probability wagers but with more frequent wins than single numbers.
Even-money bets cover 18 of the 37 or 38 numbers, giving them a 48.65% win rate in European and 47.37% in American roulette. This near 50% chance makes them popular for conservative play and betting systems.
Dozen and column bets cover 12 numbers, offering a 32.43% chance in European and 31.58% in American. They pay 2 to 1, balancing decent odds with a reasonable return, making them a middle-ground option for many players.
The house edge is the casino’s built-in advantage, derived from the zero and double zero pockets. In European roulette, the 2.7% edge means players lose $2.70 per $100 wagered over time. In American, it’s $5.26 per $100.
This edge applies to all bets equally, even though payouts vary. No bet avoids it—whether you’re playing a single number or red/black. Over thousands of spins, the house will always come out ahead.
Always choose European or French roulette when available. The single zero significantly improves your odds compared to the American double-zero wheel. Look for tables with special rules like En Prison or La Partage, which return half your even-money bet on zero.
Avoid novelty roulette versions with extra symbols or side bets, as they often carry higher house edges. Stick to standard rules and focus on bets with higher probability to extend your play and reduce volatility.
What are the odds of hitting a single number?
1 in 37 (2.70%) in European roulette and 1 in 38 (2.63%) in American roulette.
Do outside bets really have better odds?
Yes. Even-money bets have nearly a 50% chance of winning, making them the safest in terms of frequency, though payouts are smaller.
How does the house edge work?
It’s the statistical advantage from the zero pockets. Over time, it ensures the casino profits regardless of short-term player wins.
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