If you have ever searched for European vs American roulette, you are probably looking for one practical thing: which version gives you better value for your bets. The good news is that roulette is easy to compare because the game’s payouts are standardized. The not-so-good news is that a tiny design change in the wheel—single zero vs double zero—can nearly double the casino’s built-in advantage.
This guide breaks down the real differences between European and American roulette (wheel layout, rules, and expected return), explains player-friendly options like the en prison rule and la partage, and finishes with clear table-selection tips you can use immediately.
The core difference: the wheel layout (37 vs 38 pockets)
European and American roulette use the same basic betting layout on the table felt (numbers 1 to 36 plus the zero area), and they offer the same categories of bets (inside bets like straight-up numbers, and outside bets like red/black). The defining difference is on the wheel:
- European roulette: 37 pockets total (numbers 1–36 plus a single 0).
- American roulette: 38 pockets total (numbers 1–36 plus 0 and 00).
That extra 00 pocket might look like “just one more outcome,” but it changes the math of every bet you place because payouts do not increase to compensate.
Roulette house edge explained (and why it jumps on double zero)
The roulette house edge is the average percentage of each bet the casino expects to keep over the long run. It is not a prediction of what happens in a short session, but it is an extremely useful comparison tool when choosing between tables.
European roulette house edge (single zero)
On a standard European wheel with 37 pockets, the house edge is about 2.70%. This comes from the fact that payouts are based on 36:1-style odds (including your stake), while there are 37 possible outcomes.
American roulette house edge (double zero)
On an American wheel with 38 pockets, the house edge rises to roughly 5.26%. The payouts remain the same, but now there are more ways for the ball to land on a losing pocket relative to any given bet.
In everyday terms: on average, the double-zero game costs you more per dollar wagered over time than the single-zero game.
European vs American roulette: side-by-side comparison
| Feature | European Roulette | American Roulette |
|---|---|---|
| Wheel pockets | 37 (1–36, 0) | 38 (1–36, 0, 00) |
| Zero pockets | Single zero (0) | Double zero (0 and 00) |
| Base house edge | ~ 2.70% | ~ 5.26% |
| Common “special” rules | May include en prison or la partage on even-money bets | Usually no special zero rules (varies by casino) |
| Bet types and payouts | Same standard roulette bets and payouts | Same standard roulette bets and payouts |
| Typical RTP (Return to Player) | ~ 97.30% (without special rules) | ~ 94.74% |
Key takeaway: if all else is equal, European roulette gives you a higher RTP and a lower house edge than American roulette.
What stays the same: bet types, payouts, and “nominal odds”
A common point of confusion is that European and American roulette look almost identical on the table and they pay the same. That is true. For example:
- Straight-up (single number) bets typically pay 35 to 1.
- Red/black, odd/even, and high/low typically pay 1 to 1.
- Dozens and columns typically pay 2 to 1.
Because payouts are the same, players sometimes assume the games are “the same value.” In reality, the probability of winning each bet is slightly lower on the double-zero wheel, which is exactly why the roulette house edge increases.
The player-friendly rules that can improve European roulette: en prison and la partage
Many casinos use the term “European roulette” for the single-zero wheel alone. But in some venues (especially where French-style roulette is popular), you may also see special rules on even-money bets that make the game even more favorable.
What is the en prison rule?
The en prison rule is a rule applied to even-money bets (like red/black, odd/even, high/low). If you place an even-money bet and the ball lands on zero, your bet is not immediately lost. Instead, it is “imprisoned” for the next spin.
- If your bet wins on the next spin, you get your stake back (typically with no profit).
- If your bet loses on the next spin, you lose the stake.
- If zero happens again, the exact handling can vary by house rules (this is why reading the table rules matters).
When applied on a single-zero wheel, en prison reduces the house edge on even-money bets to about 1.35% (roughly half of 2.70%). That is a meaningful upgrade if you mainly play outside bets.
What is la partage?
La partage is another player-friendly option on even-money bets. If you place an even-money bet and the ball lands on zero, you immediately get half of your bet back and lose the other half.
Like en prison, la partage on a single-zero wheel reduces the house edge on even-money bets to about 1.35%.
Which is better: en prison or la partage?
In terms of long-run math on a single-zero wheel, they are effectively equivalent for even-money bets (both bring the edge down to about 1.35%). In terms of experience:
- La partage is simple and immediate: you instantly recover half your stake on zero.
- En prison can feel exciting because you get a “second chance” next spin, but it can also tie up your money for a spin.
The bigger win is not choosing between them—it is spotting them on the table and using them when you prefer even-money wagers.
RTP comparison: what you are really “paying” to play
RTP (Return to Player) is the flip side of house edge. If a game has a 2.70% house edge, its RTP is about 97.30%.
- European roulette RTP: ~97.30% (standard single-zero rules).
- American roulette RTP: ~94.74% (standard double-zero rules).
- European roulette with en prison or la partage (even-money bets only): effective house edge ~1.35% on those bets, which corresponds to ~98.65% RTP for that bet category.
This is why experienced players actively look for single-zero tables and pay attention to whether en prison rule or la partage is available.
Regional popularity: where you are most likely to find each version
While any casino can offer either wheel, there are broad regional patterns:
- European roulette (single zero) is widely associated with casinos across Europe and many online casinos that promote lower house edge variants.
- American roulette (double zero) is historically common in the United States and is still widely available in many US-facing casinos and some cruise or tourist-oriented venues.
Practical implication: if you are playing in a market where double-zero is common, it becomes even more important to scan the floor (or the game lobby) for the single-zero option.
Practical takeaways: how to choose a better roulette table fast
If you want a quick checklist that aligns with both beginner intent and advantage-seeking intent, use this order of operations.
1) Prefer single-zero tables whenever possible
This is the biggest lever you can pull. Moving from double-zero to single-zero improves the base house edge from roughly 5.26% to about 2.70% without changing how you play.
2) Check the rules placard for en prison or la partage
If you enjoy outside bets (red/black, odd/even, high/low), finding a table with en prison or la partage can further improve your value on those bets.
3) Verify any extra table rules that affect expected value
Casinos can add conditions that change outcomes. The specifics vary by venue, but common things worth confirming include:
- Whether en prison applies to all even-money bets or only certain ones.
- How consecutive zeros are handled under en prison.
- Whether any special side bets are optional (they usually are) and what their payouts are.
Reading the rules takes seconds and can protect you from unintentionally playing a higher-cost game.
Bankroll management that fits roulette (without overcomplicating it)
Roulette is a negative-expectation game in the long run, which makes bankroll management a major quality-of-experience advantage. Good bankroll habits can help you play longer, stay in control, and enjoy variance without letting it control you.
Set a session budget and a stop point
- Decide your buy-in (session bankroll) before you start.
- Set a loss limit you will not exceed.
- Consider a win target if you like structured sessions, then cash out when you hit it.
Choose bet sizes that match the volatility you want
Inside bets (like straight-up numbers) have higher volatility; outside bets have lower volatility. If your goal is steadier swings, smaller inside exposure and more even-money play tends to feel smoother.
Remember that “even-money” is not truly 50/50
Even-money bets are often advertised as close to 50/50, but the zero (and 00 in American roulette) breaks the symmetry. That is exactly why rules like la partage and en prison rule matter: they partially soften the impact of zero on those bets.
Strategy myths: what doesn’t change the math (and what can still help)
Roulette attracts a lot of system talk. It is useful to separate what changes your experience from what changes the underlying edge.
Myth: “A system can overcome the house edge”
Betting systems (like Martingale-style progressions) do not change the built-in roulette house edge. They only change how risk is distributed across time—often by increasing the chance of a large loss during a bad run, especially with table limits.
Myth: “Past spins predict future outcomes”
On a fair wheel, each spin is independent. Streaks (like many reds in a row) can happen naturally without implying that black is “due.” Trend-chasing can be entertaining, but it does not improve expected value.
What actually helps: better game selection and disciplined play
- Game selection: choosing single-zero over double-zero is a real, measurable improvement.
- Rule awareness: spotting en prison or la partage can materially help even-money bettors.
- Bankroll discipline: setting limits helps you control the session, even though it does not change the house edge.
Casino-selection tips for beginners and advantage-seekers
If your goal is to get the best roulette conditions you can, here is a practical, player-focused approach.
Look for these “green flags”
- Single-zero wheel clearly labeled on the table or in the game info.
- European rules with en prison rule or la partage if you mainly play even-money bets.
- Clear, readable rules displayed at the table or in the game description.
- Reasonable minimum bet sizes that fit your session bankroll.
Be cautious with these “cost increasers”
- Double-zero wheels when a single-zero alternative is available.
- Extra side bets with flashy payouts (they are often higher house edge than standard bets).
- Minimum bets that force you to wager larger than you planned (this can shorten your session quickly).
The goal is simple: keep more of your action going toward lower-edge conditions, so your entertainment budget buys more spins or lets you play blackjack.
FAQ: quick answers on European vs American roulette
Is European roulette always better than American roulette?
From a pure math perspective, a standard single-zero European wheel is better value than a standard double-zero American wheel because the house edge is lower (~ 2.70% vs ~ 5.26%).
Do European and American roulette have the same odds?
They have the same payouts, but not the same probabilities because the number of pockets differs (37 vs 38). That is why the house edge differs.
Does the en prison rule apply to all bets?
Typically, en prison applies to even-money bets only, not to inside bets like straight-ups or splits. Always confirm the specific table rules.
Bottom line: the simplest upgrade you can make
If you remember just one thing about European vs American roulette, make it this: choose single zero vs double zero whenever you can. That single design choice cuts the base house edge roughly in half, improving RTP without requiring you to change your bet types or learn new gameplay.
Then, if you like even-money bets, look for tables that add the extra player-friendly boost of la partage or the en prison rule. Combine smart table selection with a clear bankroll plan, and you will get a smoother, longer, and more cost-efficient roulette experience—exactly what most players are really after.
