European vs American Roulette
When new players start exploring roulette online, they quickly discover that not all roulette wheels are the same. At first glance, European roulette and American roulette look almost identical. Both feature a spinning wheel, a betting layout, numbered pockets, and the same broad idea of placing wagers on where the ball will land.
Because of that, many beginners assume the two versions are interchangeable.
They are not.
The difference between European and American roulette is simple to explain, but important to understand. One version includes an extra pocket on the wheel, and that single detail changes the game mathematically. It affects the house edge, shifts the probabilities, and influences which version many experienced players prefer.
For anyone comparing roulette tables online, understanding the distinction between European and American roulette is one of the most useful early lessons. It helps players make better choices, avoid confusion, and understand why some roulette games are generally seen as more favourable than others.
This guide explains the key differences, how each version works, what the extra pocket means in practice, and why the choice matters when comparing online roulette games.
What is roulette?
Roulette is one of the best-known casino games in the world. It is built around a rotating wheel containing numbered pockets and a small ball that lands in one of those pockets at the end of each spin.
Before the wheel is spun, players place bets on possible outcomes. These bets can be narrow, such as a single number, or broader, such as a colour, odd or even, or a group of numbers.
When the spin ends, the ball lands in one winning pocket and all bets are settled according to the chosen outcomes.
One of the reasons roulette is so popular is that the basic format is easy to understand. Even players who know little about the game can quickly grasp the idea of betting on numbers, colours, or number ranges. The game feels simple on the surface, but the wheel structure matters more than many new players realise.
The key difference at a glance
The main difference between European roulette and American roulette is the number of zero pockets on the wheel.
European roulette
European roulette has:
- numbers 1 to 36
- one single zero pocket
That means there are 37 pockets in total.
American roulette
American roulette has:
- numbers 1 to 36
- one single zero pocket
- one double zero pocket
That means there are 38 pockets in total.
That additional double zero is the difference that changes the mathematics of the game.
Everything else may feel broadly similar to a casual player, but this one extra pocket gives the house a stronger advantage in American roulette.
Why the extra pocket matters
The extra pocket reduces the chance of winning many common bets.
Take a simple even-money bet such as red or black. At first, this sounds like a near 50/50 proposition, but the zero pockets prevent it from being exactly even.
In European roulette:
- there are 18 red numbers
- 18 black numbers
- 1 zero
If you bet on red, 18 out of 37 outcomes are winning outcomes.
In American roulette:
- there are 18 red numbers
- 18 black numbers
- 1 zero
- 1 double zero
If you bet on red, 18 out of 38 outcomes are winning outcomes.
That difference may seem small at a glance, but over time it affects the house edge and the overall value of the game.
House edge in European roulette
European roulette has a house edge of 2.70%.
That figure comes from the single zero. Because the payout odds on the table do not fully reflect the true probability once the zero is included, the casino retains a mathematical edge.
For example, a straight-up bet on one number pays 35 to 1, but the actual chance of hitting a number in European roulette is 1 in 37. That difference between true odds and payout odds is where the house edge comes from.
A 2.70% house edge means that, in long-run theoretical terms, the casino expects to keep around £2.70 for every £100 wagered.
This does not mean a player loses that amount in a given session. It simply describes the long-term structure of the game.
House edge in American roulette
American roulette has a house edge of 5.26%.
That is nearly double the house edge of European roulette.
The reason is simple: the extra 00 pocket creates another losing outcome for many common bets, while the payout odds remain the same.
For example, a straight-up number bet still pays 35 to 1, but now the chance of hitting that number is 1 in 38 instead of 1 in 37.
The same principle applies across the table. The additional losing pocket increases the casino’s advantage.
This is why many players, guides, and reviewers recommend European roulette when both versions are available. The game is not only simpler in wheel design, but also more favourable in long-run mathematical terms.
Why experienced players often prefer European roulette
The biggest reason many players prefer European roulette is straightforward: lower house edge.
If two games are otherwise similar in speed, presentation, and betting options, the version with the lower house advantage is usually more attractive.
That does not mean European roulette is easy to beat or risk-free. It is still a casino game with a built-in edge. But compared with American roulette, it is often considered the better option.
Players who care about value, long-term probability, and game selection often start with the wheel structure before thinking about anything else.
For beginners, that makes the comparison especially useful. It is one of the easiest examples in online casino gaming of how a small rules difference can affect the underlying maths.
Do the betting options look different?
In practice, the betting layouts of European and American roulette are very similar, but not identical.
Both versions include common bets such as:
- single number bets
- split bets
- street bets
- corner bets
- red or black
- odd or even
- high or low
- dozens
- columns
The American layout, however, includes the additional space for the 00 pocket, so the table layout looks slightly different to reflect that.
A new player might not think much of this at first, but it is another visual sign that the game has a different wheel structure and different probabilities.
European roulette wheel layout
A European roulette wheel contains:
- numbers 1 to 36
- one zero
The numbers are arranged in a non-sequential order around the wheel, alternating between red and black, with the zero usually shown in green.
The exact arrangement of the wheel matters to the physical and traditional structure of roulette, but for most online beginners the important point is simply that there is one green zero pocket.
That one pocket is what gives the game its house edge.
American roulette wheel layout
An American roulette wheel contains:
- numbers 1 to 36
- one zero
- one double zero
The zero and double zero are usually both green and placed separately on the wheel.
That second green pocket creates another non-winning outcome for many bets, which is the key reason the house edge rises from 2.70% to 5.26%.
For beginners, the simplest way to think about it is this:
- European roulette has one house pocket
- American roulette has two house pockets
That is not the technical term, but it helps explain why the player’s odds shift.
Straight-up bets in both versions
A straight-up bet is a bet on one single number.
This type of bet pays 35 to 1 in both European and American roulette.
That might make the two versions sound equivalent, but they are not.
European roulette
- chance of hitting the number: 1 in 37
American roulette
- chance of hitting the number: 1 in 38
The payout remains the same, but the true odds of success are slightly lower in the American version.
That mismatch is one of the simplest ways to see the impact of the extra pocket.
Even-money bets in both versions
Even-money bets include:
- red or black
- odd or even
- high or low
These are often popular with beginners because they are easy to understand and more likely to win than narrow number bets.
But the zero pockets still matter.
In European roulette
An even-money bet wins on 18 of 37 outcomes.
In American roulette
An even-money bet wins on 18 of 38 outcomes.
Again, that may not sound dramatic in a short session, but over time it increases the casino advantage.
French roulette and where it fits in
When comparing roulette versions, players sometimes also come across French roulette.
French roulette is very similar to European roulette in wheel structure because it also uses a single zero wheel. In many cases, the main differences are presentation, terminology, and certain table rules.
Some French roulette tables include rules such as:
- La Partage
- En Prison
These can reduce the house edge on certain even-money bets under specific conditions.
So if you are comparing all three:
- American roulette is usually the least favourable of the main standard versions
- European roulette is more favourable than American
- French roulette can sometimes be even more attractive on certain bets, depending on the rules in use
For beginners, though, the most important first comparison remains European versus American.
Online roulette and why the version matters
Online casinos often list multiple roulette games in their lobby, including:
- European roulette
- American roulette
- live roulette
- premium roulette variations
- auto roulette
- lightning-style or feature-based roulette formats
The version matters because players sometimes focus on presentation or branding and overlook the wheel type.
A game might look polished, modern, and exciting, but if it uses an American wheel, the house edge is still higher than a comparable European version.
That is why checking the game title and rules is important before playing.
Does wheel version matter in live casino roulette?
Yes.
Live casino roulette can use either European or American wheels, depending on the provider, studio, or table format.
Some live tables are clearly labelled as European roulette. Others are specifically labelled as American roulette. Some may also include specialist variants.
Because live casino games often place more emphasis on presentation, camera angles, and atmosphere, players can sometimes focus more on the experience than the maths. But the wheel structure still matters in exactly the same way.
A live American roulette table still carries the higher house edge. A live European roulette table still offers the lower one.
Which version is better for beginners?
For most beginners, European roulette is usually the better place to start.
There are a few reasons for this:
1. Lower house edge
This is the biggest reason. European roulette is mathematically more favourable than American roulette.
2. Simpler wheel structure
The single zero format is easier to understand and more commonly recommended in guides.
3. Wider recommendation base
Many beginner roulette resources, casino reviews, and player guides recommend European roulette first because it offers better value.
4. Similar gameplay experience
A beginner is not giving up much in terms of basic entertainment by choosing European roulette. The visual and practical experience remains very similar.
If two games feel largely the same, most players would rather choose the one with the lower long-run house edge.
Why do casinos still offer American roulette?
Casinos offer American roulette because it is a recognised classic version of the game, especially in certain markets, and because some players prefer it out of familiarity or tradition.
It also offers the casino a higher edge, which clearly makes it commercially attractive.
In some cases, players may simply not notice the difference or may not care enough to change games. In others, a specific table or live experience may attract players regardless of wheel type.
But from a pure comparison standpoint, the presence of American roulette is one more reason players should check the game details rather than assuming every roulette table is equally favourable.
Can betting systems solve the difference?
No.
Some players use roulette betting systems such as:
- Martingale
- Fibonacci
- D’Alembert
- Labouchere
But these systems do not remove the house edge, and they do not cancel out the disadvantage created by the extra double zero in American roulette.
In fact, the higher house edge remains in place no matter what betting progression a player uses.
This is important because some beginners think clever staking can make one version of roulette roughly equal to another. It cannot. The game’s mathematics remain different.
Short sessions versus long-term value
In a short session, a player may not notice much practical difference between European and American roulette.
Someone could sit down at an American table, win early, and think the version is fine. Another could lose quickly on a European table and think the single zero did not help.
That is because short-term outcomes are heavily influenced by luck.
But when players compare games in a more informed way, they are not usually asking which version might randomly win in one short session. They are asking which version offers the better structure overall.
That is where European roulette stands out.
A practical comparison example
Imagine two players each make a large number of even-money bets over time.
- Player A uses European roulette
- Player B uses American roulette
Both players use the same stake size and the same type of bets.
In the long run, Player B is facing the higher house edge because of the double zero. That does not guarantee Player B always loses faster in any one session, but the mathematical disadvantage is greater.
This is exactly why game selection matters in casino gambling. Two games that look almost identical on the surface can offer different long-run value.
What to check before choosing a roulette game
If you are comparing roulette games online, check these points:
- Is it European, American, or French roulette?
- Does it use a single zero or double zero wheel?
- Is it a live dealer or software-based game?
- What are the table limits?
- Are there any special rules on even-money bets?
- Is the table clearly explained for beginners?
- Does the game work well on mobile?
This simple checklist helps you avoid choosing a roulette table based only on appearance.
Final thoughts
European roulette and American roulette may look very similar, but the extra double zero in American roulette changes the game in an important way.
That one additional pocket increases the house edge from 2.70% in European roulette to 5.26% in American roulette. Over time, that makes European roulette the more favourable version for most players.
For beginners, the takeaway is simple:
- learn to spot the wheel type
- understand why the zero structure matters
- choose European roulette when value is the priority
American roulette still has a place as a recognised version of the game, and some players may still enjoy it for familiarity or presentation reasons. But if two tables feel broadly similar, the single-zero option is usually the stronger choice.
As with all casino games, roulette should be treated as entertainment rather than a way to make money. Understanding the difference between European and American roulette will not remove the risk, but it will help players make more informed decisions when comparing online casino options.