If you have ever wondered why roulette “feels” different from one table to the next, the answer is usually simple: the wheel layout. In practical terms, European roulette uses a single zero (37 pockets total), while American roulette adds a double zero (38 pockets total). That one extra pocket is not cosmetic; it directly impacts your long-run results by increasing the house edge from about 2.70% to roughly 5.26%.
There is also a third option many players love: French roulette. It is typically a single-zero game like European roulette, but it often comes with player-friendly rules such as La Partage or En Prison that can reduce the effective house edge on even-money bets to around 1.35%.
This guide breaks down the practical differences that matter most: win probabilities, RTP, common rule variations, and how to pick the best roulette game for better player odds.
At a glance: European vs American vs French roulette
| Variant | Pockets | Zeros | Typical house edge | Typical RTP | Best for |
|---|---|---|---|---|---|
| European roulette | 37 | 0 | ~ 2.70% | ~ 97.30% | Better baseline odds than American |
| American roulette | 38 | 0 and 00 | ~ 5.26% | ~ 94.74% | Players who prefer US-style tables (but worse odds) |
| French roulette | 37 | 0 | ~ 2.70% (standard rules) | ~ 97.30% | Single-zero roulette with classic table feel |
| French roulette (La Partage / En Prison on even-money bets) | 37 | 0 | ~ 1.35% (even-money bets only) | ~ 98.65% (even-money bets only) | Maximizing value on red/black, odd/even, high/low |
Key takeaway: When people search for “European vs American roulette” or “single zero vs double zero,” they are really comparing how much the zeros cost over time. If you can choose, single-zero (and especially La Partage) is the player-friendly direction.
Wheel layouts: why the extra zero matters
European roulette wheel (single zero)
- Total pockets: 37
- Numbers: 1 to 36, plus 0
- What it means: Every bet is priced around a wheel where the casino has exactly 1 extra pocket (the 0) beyond the 36 “normal” numbers.
American roulette wheel (double zero)
- Total pockets: 38
- Numbers: 1 to 36, plus 0 and 00
- What it means: The casino has 2 extra pockets (0 and 00). That additional pocket is a major reason American roulette is significantly tougher for the player in the long run.
French roulette wheel (single zero) plus rules
- Total pockets: typically 37
- Numbers: 1 to 36, plus 0
- What it means: The physical wheel is usually like European roulette, but French roulette may include rules that soften the impact of the 0 on certain bets.
House edge and RTP explained (in plain language)
House edge is the casino’s theoretical advantage on a bet over the long run, expressed as a percentage of your stake.RTP (return to player) is the flip side: RTP = 100% - house edge.
Roulette is a great game to compare because the math is clean and largely depends on the number of pockets.
Why European roulette is ~ 2.70%
On a single-zero wheel, the house advantage comes from the fact there are 37 possible outcomes but many bets pay as if there were only 36.
- European roulette house edge:
1 / 37 ≈ 0.027027→2.70% - European roulette RTP:97.30%
Why American roulette is ~ 5.26%
American roulette adds one more losing pocket for most bets (the 00), which doubles the built-in advantage relative to European roulette.
- American roulette house edge:
2 / 38 ≈ 0.052632→5.26% - American roulette RTP:94.74%
How French roulette La Partage can drop the edge to ~ 1.35%
With La Partage, when the ball lands on 0 and you made an even-money bet (like red/black), you typically lose only half your stake instead of the full amount.
- Effective edge on even-money bets (single zero): roughly half of 2.70% →~ 1.35%
- Effective RTP on even-money bets:~ 98.65%
En Prison is similar in spirit: on a zero outcome, your even-money stake is “imprisoned” for the next spin rather than immediately lost. The exact effect can vary slightly by house procedure, but it is widely treated as offering approximately the same effective advantage as La Partage on even-money bets.
European vs American roulette: win probabilities that players actually feel
The most practical way to compare roulette variants is to look at the probability of common outcomes. The payouts on most tables are the same, so the only thing that changes is the chance of winning.
Probability of hitting a single number (straight-up bet)
| Variant | Winning outcomes | Total outcomes | Win probability |
|---|---|---|---|
| European (single zero) | 1 | 37 | 1/37≈2.70% |
| American (double zero) | 1 | 38 | 1/38≈2.63% |
That looks like a small difference per spin, but it compounds across many spins. More importantly, the payout is typically 35 to 1 in both variants, even though the true odds differ slightly.
Even-money bets (red/black, odd/even, 1–18/19–36)
Even-money bets are popular because they win often, but they still get hit by zeros.
| Variant | Win probability | Lose probability | What the zero does |
|---|---|---|---|
| European | 18/37≈48.65% | 19/37≈51.35% | 0 is an extra losing result |
| American | 18/38≈47.37% | 20/38≈52.63% | 0 and 00 are extra losing results |
| French with La Partage (even-money only) | Same as European for win frequency | Zero is a half-loss event | 0 typically returns half your stake |
Practical insight: If you like steady, frequent outcomes (even-money bets), French roulette with La Partage is one of the most value-friendly versions commonly available.
Odds and payouts table (what stays the same across versions)
A common misconception is that European roulette “pays better.” Most of the time, the payouts are the same; the difference is that European and French roulette have fewer zero pockets working against you.
| Bet type | Typical payout | European win probability | American win probability |
|---|---|---|---|
| Straight up (single number) | 35:1 | 1/37≈ 2.70% | 1/38≈ 2.63% |
| Split (2 numbers) | 17:1 | 2/37≈ 5.41% | 2/38≈ 5.26% |
| Street (3 numbers) | 11:1 | 3/37≈ 8.11% | 3/38≈ 7.89% |
| Corner (4 numbers) | 8:1 | 4/37≈ 10.81% | 4/38≈ 10.53% |
| Six line (6 numbers) | 5:1 | 6/37≈ 16.22% | 6/38≈ 15.79% |
| Dozen (12 numbers) | 2:1 | 12/37≈ 32.43% | 12/38≈ 31.58% |
| Column (12 numbers) | 2:1 | 12/37≈ 32.43% | 12/38≈ 31.58% |
| Even-money (18 numbers) | 1:1 | 18/37≈ 48.65% | 18/38≈ 47.37% |
French roulette La Partage and En Prison: what they are and why they help
When players search for French roulette La Partage, they are usually looking for a simple advantage: protection from the zero on even-money bets.
La Partage (the “share” rule)
- Applies to even-money bets (red/black, odd/even, 1–18/19–36).
- If the ball lands on 0, you typically lose only half your stake.
- Result: the effective house edge on those bets becomes about 1.35% instead of 2.70%.
En Prison (the “in prison” rule)
- Also usually applies to even-money bets.
- If the ball lands on 0, your stake is held for the next spin.
- If your bet wins on the next spin, you typically get your stake back (often without winnings for the imprisoned spin). If it loses, the stake is lost.
- In many standard implementations, the long-run effect on even-money bets is comparable to La Partage, often cited as about 1.35%.
Important practical note: La Partage and En Prison generally do not improve the odds on inside bets (like straight-up or splits). Their value is concentrated on the high-frequency even-money wagers.
Regional prevalence: where you are most likely to find each roulette type
Another practical difference is simply availability. Players often end up on a roulette variant based on geography and venue.
- European roulette (single zero) is widely associated with European casinos and is also very common as a roulette game online.
- American roulette (double zero) is especially common in US land-based casinos, where the 0 and 00 wheel is a familiar standard.
- French roulette (single zero, with La Partage or En Prison) is frequently offered where classic French rules are popular and is also widely available in many online libraries as a distinct table type.
From a player-odds perspective, this creates a straightforward strategy: if you have access to a single-zero wheel, you are usually choosing the more favorable math.
European vs American roulette: the “cost” of the extra zero in real terms
House edge is a long-run average, not a promise of what happens in a short session. Still, it is one of the best tools for making smarter game choices because it describes the game’s built-in pricing.
To illustrate the difference:
- On European roulette at ~ 2.70% house edge, the theoretical expected loss is about 2.70 units per 100 units wagered (over the long run).
- On American roulette at ~ 5.26% house edge, the theoretical expected loss is about 5.26 units per 100 units wagered (over the long run).
- On French roulette with La Partage for even-money bets at ~ 1.35% house edge, the theoretical expected loss is about 1.35 units per 100 units wagered (over the long run, and only for those even-money bets).
Benefit-driven takeaway: Choosing single-zero over double-zero can materially improve your value per spin, and choosing La Partage can improve it even further if you prefer even-money bets.
Rule variations to watch for (so you get the odds you think you’re getting)
When comparing roulette games, the name on the felt is helpful, but the rules panel is where the value is. Here are the variations that most often influence player odds or experience:
- Number of zeros: This is the big one.Single zero vs double zero is the core driver of house edge for standard roulette.
- La Partage / En Prison: These rules can be a meaningful boost for even-money betting.
- Table limits: Not a math change, but it can shape your strategy and session control.
- En Prison procedure details: Exact handling can vary by venue (for example, what happens if zero appears again while a stake is imprisoned). When in doubt, assume the player-friendly benefit applies to even-money bets, but check the house rules for the precise process.
Best choice for better player odds (clear advice)
If your goal is to get the most favorable roulette conditions available, you can make the decision quickly:
- Choose single-zero over double-zero whenever you have the option. This is the cleanest improvement you can make without changing how you play.
- If you like even-money bets, prioritize French roulette with La Partage (or En Prison) because it can reduce the effective house edge on those bets to about 1.35%.
- If you are deciding between European and French roulette with no special rules, treat them as similar from a baseline math standpoint (both are typically 2.70% house edge).
In one line: For the best odds, look for single zero first, and then look for La Partage if you plan to play red/black, odd/even, or high/low.
Quick checklist: how to identify the best roulette table in seconds
- See 00? It is American roulette (higher house edge).
- Only one zero (0)? It is European or French roulette (better baseline odds).
- La Partage listed in rules?
- If yes, even-money bets get a meaningful edge improvement.
- En Prison listed in rules?
- If yes, even-money bets may benefit in a similar way, depending on the table procedure.
FAQ: European vs American roulette questions players ask most
Is European roulette better than American roulette?
Yes, from a mathematical standpoint. European roulette’s single zero produces a house edge of about 2.70%, while American roulette’s double zero raises it to about 5.26%. Lower house edge means higher RTP and better long-run value.
Do the bet types change between European and American roulette?
Most core bets and payouts are the same (straight up, split, corner, dozens, columns, and even-money bets). The main difference is the wheel and how many zero pockets it contains.
Does French roulette always have La Partage?
Not always. French roulette is a single-zero variant, but whether it includes La Partage or En Prison depends on the table. If the rule is present, it is usually stated clearly in the game rules.
What is the best roulette version for even-money bets?
In many common offerings, it is French roulette with La Partage (or En Prison) because it can reduce the effective house edge on even-money bets to around 1.35%.
Bottom line: choose single zero, and choose La Partage when you can
The smartest roulette upgrade is not complicated: reduce the number of zeros working against you. In the “European vs American roulette” debate, the single-zero wheel is the clear value pick because it cuts the house edge roughly in half compared with double-zero.
Then, if you want to go one step further without changing the classic roulette experience, look for French roulette La Partage (or En Prison)—especially if you enjoy even-money bets. It is one of the simplest, most practical ways to put better probabilities on your side while keeping the same familiar bet types and payouts.
