Thinking about playing roulette but unsure what all the numbers really mean? You’re not alone. Whether you’re new to the game or want to make your betting budget go further, understanding odds, RTP and the house edge will make you a more confident player.
This guide explains how payouts work, what sets each bet apart and why the casino keeps a small advantage. Read on for clear examples and practical context to help you choose bets that suit your style.
How Does Roulette Work?
Roulette centres on a spinning wheel with numbered pockets and a matching table layout for placing bets. The pockets alternate between red and black, and there is at least one green zero. Players place chips on numbers, groups of numbers, colours or other marked areas of the table before the dealer spins the wheel and launches the ball in the opposite direction. When the ball settles in a pocket, winning bets are paid according to set odds.
Different bets cover different ranges of outcomes and therefore carry different payouts. This basic structure matters because it shapes every later discussion about house edge, RTP and how to compare bets. With that context in mind, next we look at the built-in advantage the casino holds.
What Is House Edge in Roulette?
The house edge is the percentage advantage a casino has over players, calculated over many spins. It arises from the presence of the zero pocket (and the double zero in some wheels), which means the payouts are set slightly below true 50/50 odds on many bets.
European roulette, which has a single zero, carries a house edge of about 2.7%. American roulette, with both a zero and a double zero, increases that edge to roughly 5.26%. In practical terms, these percentages describe the portion of total wagers the casino is expected to retain over time, not the outcome of any single spin.
Understanding the house edge helps when choosing between versions of the game and when comparing specific bets. Next, we’ll translate that concept into the familiar Return to Player figure.
Roulette RTP: What Does It Mean?
Return to Player (RTP) is the percentage of wagers a game is expected to return to players over the long term. RTP and house edge are complementary: RTP equals 100% minus the house edge. Thus, European roulette typically shows an RTP around 97.3%, while American roulette sits near 94.74%.
RTP is most useful as a long-run benchmark and as a comparison tool between game variants. Short sessions can deviate widely from the RTP because individual spins are random. With RTP and house edge understood, it’s easier to see why different bets pay different amounts — and how those payouts reflect probability.
The following section explains the main bet types and their payouts so you can match risk and reward to your preferences.
Inside Bets
Inside bets cover specific numbers or small clusters of numbers on the central portion of the table. They offer higher payouts because the chances of winning are lower, which means outcome variance is greater than with outside bets. Players should be aware that while the potential single-spin returns can be attractive, the hit frequency is reduced.
Straight Up
A straight-up bet is placed on a single number, including zero. To place it you put your chip directly on the number pocket. The payout for a win is 35 to 1, reflecting the low probability of a single number coming up.
Split
A split covers two adjacent numbers by placing a chip on the shared line between them. It pays 17 to 1 if either number is the result. Splits allow you to cover more ground than a straight-up while keeping a relatively high payout.
Street
A street bet covers three numbers in a horizontal row. Place a chip at the end of the row to indicate the three-number bet. A winning street pays 11 to 1, offering a compromise between coverage and payout size.
Corner
A corner bet covers a block of four numbers by placing the chip where the four meet. A successful corner returns 8 to 1. This is useful when you want to cover a compact area of the table without spreading chips along multiple lines.
Six Line
Also called a double street, this bet covers two adjacent rows for six numbers and pays 5 to 1. You place the chip on the outer corner of the two rows to mark the six-number bet. It gives broader coverage while still offering a higher payout than most outside bets.
Each of these inside bets offers higher variance and the potential for larger single-spin payouts, but they also come with lower hit rates. Players are encouraged to consider risk and bet sizes carefully and to gamble responsibly. After looking at those, the next section covers the lower-risk outside bets that appeal to players seeking steadier returns.
Outside Bets
Outside bets cover broader groups of numbers and therefore offer lower payouts, because the probability of winning is higher. They are often chosen by players seeking more frequent, smaller wins rather than the larger, less likely payouts of inside bets. As with all roulette wagers, the house edge still applies and affects long-term returns.
Red or Black
Betting on all red or all black numbers pays 1 to 1. This bet simply depends on the colour of the pocket the ball lands in, excluding the green zero pockets which cause a losing result for both colours on most roulette wheels.
Odd or Even
Covering all odd or all even numbers also pays 1 to 1. Like the colour bets, this wager applies to most numbered pockets but excludes the zero pockets, which again result in a loss for these bets on standard roulette wheels.
Dozen
A dozen wager covers 1–12, 13–24 or 25–36 and pays 2 to 1. Each dozen includes twelve numbers, so the chance of winning is higher than most inside bets, which is reflected in the lower payout compared with those single-number or small-group wagers.
Column
A column bet covers one of the three vertical columns on the layout and pays 2 to 1. Each column contains twelve numbers spread across the table, making this another option for players preferring broader coverage of the wheel rather than individual numbers.
High or Low
High covers 19–36 and low covers 1–18; each pays 1 to 1. These bets divide the numbered pockets into two equal halves, again excluding the zero pockets, and are commonly used by players who want straightforward, even-money chances.
Outside bets generally produce a steadier pattern of wins and losses than inside bets, owing to their wider number coverage. It is important to remember that the house edge applies to all bet types and varies slightly between roulette versions, so the odds and long-term expected return can differ depending on whether you are playing a European, American or other wheel variant.
How Do American and European Roulette Odds Differ?
The key difference between American and European roulette is the wheel composition. European wheels have a single zero and 37 pockets in total; American wheels add a double zero and have 38 pockets. This additional pocket slightly reduces the probability of any given winning outcome in American roulette, which is why the house edge and RTP differ between the two.
Payout structures remain the same across versions, so the numbers shown earlier for each bet still apply. The practical takeaway is straightforward: the fewer non-number pockets on the wheel, the closer the game comes to the fair mathematical payouts, and the better the long-term RTP for players. Having covered that, the next section looks at common questions about improving chances and common misunderstandings.
Can You Improve Your Chances in Roulette?
Every spin in roulette is an independent, random event, so no betting system can alter the underlying probabilities or reduce the house edge. Systems that change bet sizes may affect how long a player’s funds last or how wins and losses are distributed across a session, but they cannot change the expected outcome over many spins.
Players can, however, make better choices by matching bet selection and stake amounts to personal goals and tolerance for variance. For instance, choosing more outside bets typically results in smaller, more frequent wins, while inside bets create higher-variance sessions with less frequent but larger payouts. Knowing the differences lets players control their experience without expecting predictable outcomes.
Next, we dispel common myths that often lead to false confidence when playing.
Common Myths About Roulette Odds
Several persistent misconceptions misrepresent how roulette works. One is the idea of “hot” or “cold” numbers — the belief that a number that has appeared frequently will continue to do so, or that a number that has not appeared recently is due. Because spins are independent and random, past results do not influence future outcomes.
Another myth claims that certain betting patterns can overcome the house edge. While these approaches may change session dynamics, they do not alter the mathematics of the game. Believing otherwise can lead to poor decision making and extended play beyond intended limits.
Understanding these myths helps set realistic expectations and supports better choices about which bets to place. With misconceptions cleared up, we can consider why it matters to learn these fundamentals.
Why Understanding Odds & RTP Matters
Knowing odds, RTP and how different bets behave makes roulette more transparent and helps players make decisions that suit their aims and budgets. It reduces surprises, clarifies the difference between high-variance and low-variance play, and provides a factual basis for comparing game versions and bet types.
We present this information so players can make informed choices and enjoy roulette as an entertainment activity with clear boundaries. Use available player protection tools and manage stakes within personal limits to keep the experience safe and sustainable.
This overview should leave you better equipped to weigh your options at the table and choose bets that match your preferences.
**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.