European vs American Roulette: Which Has Better Odds Compared
If you’ve ever watched a roulette wheel spin, you’ll know the moment holds a mix of anticipation and curiosity. Not all roulette wheels are the same, and a few small differences can affect the mathematical chances behind each bet.
This article compares European and American roulette, explains how the wheel layouts change the probabilities, and highlights what that means for play in UK venues. Read on to understand the key points that help players make an informed choice.
Understanding the Key Differences Between European and American Roulette
The most visible difference between these two variants is the number of pockets on the wheel. European roulette has 37 pockets: numbers 1 to 36 plus a single zero (0). American roulette has 38 pockets, adding a double zero (00) alongside the numbers 1 to 36 and a single zero.
That extra double zero alters the maths behind every bet. The betting options and table layouts are similar, but the extra pocket changes the probability of any particular outcome. It is this small variation that creates a measurable difference in the house advantage, and it is the primary reason many players and venues prefer one version over the other.
What Are the Odds in European Roulette?
European roulette’s single zero gives it a clear statistical character. For a bet on a single number, the chance of success is 1 in 37, which works out to about 2.70%. Even-money bets, such as red or black, are slightly less than 50% because the zero is neither red nor black.
The house edge for European roulette is 2.7%. That figure represents the average percentage of stakes that the game design gives to the house over many spins. It does not predict any one spin, but it does show how outcomes balance out across a large number of plays. Understanding this helps players set expectations about how the game behaves over time.
What Are the Odds in American Roulette?
Adding the double zero changes the probabilities in a small but meaningful way. In American roulette, a straight-up bet on a single number has a probability of 1 in 38, around 2.63%. Even-money bets are also reduced slightly because there are more non-winning pockets.
American roulette has a house edge of about 5.26%. That difference from European roulette comes entirely from the extra double zero; payouts remain the same between versions, but the chance of hitting those payouts is lower in the American game. This is what makes the two variants distinct from a player’s perspective.
House Edge Explained: European vs American Versions
The house edge is the built-in percentage advantage a casino has on a particular game. In European roulette it is 2.7%, while in American roulette it is about 5.26%. These percentages are calculated from the possible outcomes on the wheel and the fixed payouts on winning bets.
Because the payouts are identical between the two versions, the house edge increases only when the number of non-winning pockets increases. Over a long series of spins, that higher edge means the American wheel will, on average, return a slightly smaller share of wagered money to players than the European wheel.
Why Does the Number of Zeros Matter?
Each zero on the wheel acts as an additional outcome that does not pay for most bets. So a wheel with more zeros increases the proportion of spins that result in non-winning outcomes. That is the simple reason the house edge rises from 2.7% with a single zero to 5.26% with a double zero.
For players this means two things. First, identical bets pay the same in both versions, but they are less likely to succeed on the American wheel. Second, the long-term expectation—what the RTP or house edge predicts—changes because those extra non-paying pockets are built into the probability distribution of the wheel.
RTP & Payout Comparison: Which Is Better for Players?
Return to Player, or RTP, is the theoretical percentage of wagered money returned to players over time. It is the complement of the house edge. With a 2.7% house edge, European roulette has an RTP of about 97.3%. With a 5.26% house edge, American roulette has an RTP of roughly 94.74%.
Although the RTPs differ, the payout ratios for individual bets remain the same across both games—for example, 35 to 1 for a straight-up number, and 1 to 1 for even-money bets. The practical result is that the European wheel offers a slightly higher expected return because each successful outcome is relatively more likely than on the American wheel.
If you are choosing between the two purely on mathematical grounds, the European version is more favourable. However, short play sessions can deviate widely from theoretical percentages, so individual results will vary.
Common Misconceptions About Roulette Odds
A common misunderstanding is to treat RTP and payout ratios as guarantees for short-term sessions. RTPs are long-run averages based on many thousands of spins; they do not predict what will happen during one evening or even dozens of spins.
Another frequent belief is that certain numbers are “due” after a run of other results or that specific betting systems can overcome the house edge. Because each spin is independent, previous results do not influence future outcomes. Betting patterns can change how quickly you win or lose money, but they do not alter the underlying probabilities inherent in the wheel’s design.
Being clear on these points helps set realistic expectations. Knowing that RTPs describe long-term behaviour rather than short-term certainty keeps play decisions grounded.
Which Version Is More Popular in UK Casinos?
In the UK, the single-zero European wheel is the most commonly offered variant, both in physical casinos and online. The single zero is widely accepted as the standard because it provides the better mathematical outcome for players compared with the double-zero alternative.
American roulette is less common and is typically found only as an extra table for players seeking variety. That relative rarity reflects both player preference and the industry’s recognition that the single-zero wheel is more appealing to the majority of customers.
If you prefer closer-to-neutral probabilities, the European wheel will usually be the one to choose in UK venues.
Conclusion: Choosing the Best Roulette Option for UK Players
European roulette, with its single zero, gives players a demonstrably better mathematical chance than American roulette’s double-zero wheel. The main differences are the slight change in winning probabilities and the resulting house edge and RTP figures. Payouts remain the same across both versions, but the likelihood of hitting them is higher on the European wheel.
For UK players, that typically makes European roulette the sensible choice for anyone who wants the more favourable long-term expectation. Regardless of which table you pick, approach play with clear limits and an understanding of how the game’s mathematics shape outcomes. That way roulette stays an engaging form of entertainment rather than a source of stress.
**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.