At first glance, European roulette and American roulette look almost identical: same spinning wheel, same betting layout, and the same core payouts (like 35 to 1 on a straight-up number). But one small detail changes everything for your long-term results: the zero pockets.
European roulette uses a single zero (0), while American roulette adds a double zero (00). That extra pocket increases the casino’s mathematical advantage and can meaningfully affect your bankroll over time.
This guide breaks down the key contrasts in a clear, player-first way: wheel layout, 37 vs 38 pockets, house edge (about 2.70% vs roughly 5.26%), French rule options like la partage and en prison, differences in the wheel’s number sequence, and what all of that means for odds, volatility, and smart game selection.
The headline difference: single zero vs double zero
The most important difference between European and American roulette is how many “green” pockets the wheel contains.
- European roulette: numbers 1 to 36 plus a single 0=37 pockets
- American roulette: numbers 1 to 36 plus 0 and 00=38 pockets
That extra 00 pocket doesn’t change the payouts you receive on most bets, but it does change your probability of winning. When payouts stay the same while the odds worsen, the casino advantage increases.
European vs American roulette house edge (with exact, practical numbers)
The house edge is the built-in mathematical advantage the casino has over the player. In roulette, the house edge comes from the zero pocket(s): they create outcomes that cause many common bets to lose, even though the payouts are based on a 36-number game.
European roulette house edge: about 2.70%
European roulette has 37 possible outcomes (1–36 and 0). Because payouts are still based on 36 numbers, the edge works out to:
European roulette house edge = 1 / 37 ≈ 2.70%
American roulette house edge: roughly 5.26%
American roulette has 38 possible outcomes (1–36, 0, and 00). With the same payout structure, the edge becomes:
American roulette house edge = 2 / 38 ≈ 5.26%
Player impact: American roulette’s edge is nearly double. Over many spins, that difference can translate into noticeably higher expected losses for the same betting style and bankroll.
French roulette rules that can improve player value: la partage and en prison
Many players use “European roulette” as an umbrella term, but you’ll sometimes see a distinct French roulette variant (often on European-style wheels). French roulette can include player-friendly rules that apply specifically to even-money bets such as:
- Red / Black
- Odd / Even
- High (19–36) / Low (1–18)
The two famous rules are la partage and en prison.
La partage (share)
With la partage, if you place an even-money bet and the ball lands on 0, you lose only half your stake instead of the full amount.
That reduces the effective house edge on even-money bets to about:
≈ 1.35% (roughly half of 2.70%)
En prison (in prison)
With en prison, if you make an even-money bet and the ball lands on 0, your bet isn’t immediately lost. Instead, it is “imprisoned” for the next spin.
- If your bet wins on the next spin, you typically get your stake back (without profit).
- If it loses, you lose the stake.
- If 0 appears again, house rules vary, but the general idea remains: the player gets a second chance.
Like la partage, en prison generally brings the effective edge on even-money bets down to around:
≈ 1.35%
Why this matters: If you enjoy steady, frequent-hit betting (like red/black), these rules can be a major boost in value compared with standard European roulette rules, and especially compared with double zero American roulette.
Quick comparison table: European vs American roulette
| Feature | European Roulette | American Roulette |
|---|---|---|
| Zero pockets | Single zero (0) | Double zero (0 and 00) |
| Total pockets | 37 | 38 |
| Typical house edge | ≈ 2.70% | ≈ 5.26% |
| French rules option | Sometimes includes la partage/en prison | Typically not offered |
| Even-money effective edge (with la partage / en prison) | ≈ 1.35% | Not applicable |
| Wheel number order | Different sequence vs American wheel | Different sequence vs European wheel |
| Common regional availability | Common in Europe and widely online | Typical in many U.S. casinos |
Wheel layout and number sequence: same game, different physical pattern
Beyond the single zero vs double zero difference, the number sequence around the wheel also differs between European and American roulette. This doesn’t change the math of the house edge by itself, but it can matter for:
- Players who track wheel outcomes for personal record-keeping
- Dealers and physical table procedures
- Anyone curious about how the wheel distributes high/low and red/black pockets
In both versions, the layout aims to alternate colors and spread high and low numbers around the wheel rather than placing them in numerical order. The key takeaway is simple: the bet types and payouts are essentially the same, but the physical wheel arrangement is not identical.
Do payouts change between European and American roulette?
In standard casino roulette, payouts are generally the same across European roulette and American roulette. For example:
- Straight-up (single number): typically 35 to 1
- Split (two numbers): typically 17 to 1
- Street (three numbers): typically 11 to 1
- Corner (four numbers): typically 8 to 1
- Dozen / Column: typically 2 to 1
- Even-money bets: typically 1 to 1
Because payouts stay essentially consistent while the American wheel adds an extra losing pocket (the 00), the double zero version increases the house edge.
Benefit-driven takeaway: If you want the same familiar roulette experience with better value per spin, the European (single-zero) format is typically the stronger choice.
How the odds shift: what one extra pocket really does
It’s easy to underestimate the impact of a single added pocket. Here’s what changes in practical terms.
Straight-up bet odds (example)
A straight-up bet wins if the ball lands on your chosen number.
- European roulette: win probability =1 / 37
- American roulette: win probability =1 / 38
That looks like a tiny difference, but the expected value shifts because the payout remains 35 to 1 in both cases.
Even-money bet odds (example)
An even-money bet like red/black wins on 18 numbers, loses on 18 numbers, and then the green pocket(s) add extra losing outcomes:
- European roulette (single zero): 18 win, 18 loss, 1 green loss outcome
- American roulette (double zero): 18 win, 18 loss, 2 green loss outcomes
And if you’re playing French roulette with la partage or en prison, the “damage” from the green 0 on even-money bets is reduced, improving your long-run value on those wagers.
Volatility and bankroll implications: what players feel session-to-session
Roulette outcomes can swing in the short term no matter which wheel you choose. Still, the version you play affects how far your bankroll tends to stretch.
European roulette: smoother long-run cost
With a 2.70% house edge, European roulette generally provides better “time on game” for a given budget compared to American roulette. That can be a big benefit if your main goal is entertainment value and longer sessions.
American roulette: higher long-run cost per spin
With a roughly 5.26% house edge, American roulette can feel similar in the moment, but it costs more in expected value over a large number of spins. If you play frequently, the gap becomes more noticeable.
French rules on even-money bets: extra bankroll efficiency
If you like even-money bets and you find a table with la partage or en prison, the effective edge dropping to about 1.35% can help your bankroll last longer, especially during sessions where 0 appears at inconvenient times.
Regional availability: where you’re most likely to find each roulette variant
Availability can influence your options just as much as math.
- European roulette and French roulette are commonly found across Europe and are widely available online; you can also play blackjack online.
- American roulette (with the double zero 00) is typical in many land-based casinos in the United States.
Practical tip: If you have a choice between a single zero and a double zero table, choosing the single-zero game is one of the simplest, most impactful decisions you can make in roulette.
Which roulette is “better” for players?
“Better” depends on what you value, but when players ask this question, they usually mean: Which one gives me better odds?
If you want the best standard odds: choose European roulette
With a house edge of about 2.70%, European roulette is generally more favorable than American roulette at roughly 5.26%.
If you can get la partage or en prison: even better (on even-money bets)
On even-money bets, French/European rules like la partage or en prison can reduce the effective edge to about 1.35%, which is a meaningful improvement for players who enjoy red/black style wagering.
When American roulette might still appeal
American roulette can still be fun and familiar, especially if it’s the most accessible option in a local casino. And if you’re playing for the experience rather than optimizing long-run value, table vibe, limits, and comfort matter too.
Still, from an odds standpoint, the double zero is the key reason American roulette is typically the less favorable choice.
Choosing bets with the house edge in mind
One of roulette’s best qualities is how approachable it is: you can play with simple bets and clear payouts. The house edge, however, is built into the wheel structure and applies across bet types on a given wheel.
That means:
- Switching from straight-up bets to even-money bets usually changes the volatility (how swingy results feel), not the base house edge.
- Switching from American roulette to European roulette changes the house edge itself, which is a more direct improvement in long-run value.
- Finding la partage or en prison can improve value further on even-money bets.
A simple way to align bets with your goal
- For steadier sessions: consider even-money bets (and prioritize la partage / en prison if available).
- For bigger spike potential: inside bets (like straight-up) offer higher payouts but come with more variance.
- For better overall value: prioritize a single zero wheel over a double zero wheel whenever possible.
European roulette vs American roulette: a quick bankroll example
House edge is a long-run concept, not a guaranteed session outcome. You can win on either wheel. But expected value helps you estimate the “typical cost” of playing over time.
If you wager a total of 1,000 units over many spins:
- At a 2.70% house edge (European roulette), the expected loss is about 27 units.
- At a 5.26% house edge (American roulette), the expected loss is about 52.6 units.
This is why the single zero vs double zero choice can be such a powerful lever: you’re improving the math of every bet you make.
FAQ: common questions about European and American roulette
Is European roulette the same as French roulette?
They’re closely related, and both typically use a single zero wheel.French roulette often refers to tables that may offer the special even-money rules la partage or en prison, which can reduce the effective house edge on those bets.
Does the wheel number order change my chances?
The number sequence differs between European and American wheels, but the main driver of player value is still the number of zero pockets. The order doesn’t change the fundamental house edge the way single zero vs double zero does.
Are the bet types the same?
Yes. The core bet types and payouts are generally the same between European roulette and American roulette. The biggest gameplay difference is whether the wheel includes 00 and whether French rules like en prison or la partage apply.
What’s the best roulette variant for even-money bets?
If you’re focusing on even-money bets, a single-zero game with la partage or en prison can be especially attractive because the effective edge can drop to about 1.35%.
Bottom line: pick the wheel that gives you more value per spin
Roulette is exciting because it’s simple to learn, fast to play, and packed with betting options. But if you want to maximize enjoyment and stretch your bankroll, the smartest move happens before you place your first chip: choose the right variant.
- European roulette (single zero, 37 pockets) typically offers a house edge of about 2.70%.
- American roulette (double zero, 38 pockets) increases the house edge to roughly 5.26%.
- La partage and en prison rules on even-money bets can reduce the effective edge to about 1.35%, making a strong option even stronger.
If you have the choice, going with European roulette (and French rules when available) is one of the clearest ways to get better odds while enjoying the same classic roulette experience.
