Roulette looks simple: a spinning wheel, a bouncing ball, and a neat grid of numbers. But one small detail changes the math behind every spin: whether the wheel has one zero or two. That single design choice is the core difference between European roulette (single-zero) and American roulette (double-zero), and it directly affects your expected return over time.
This guide breaks down the real-world differences in an easy, practical way: wheel and table layout, house edge on common bets, French roulette rule variants that can improve even-money outcomes, and how to spot the best table quickly—whether you’re playing in a casino, on a cruise, or online.
The core difference: single-zero vs double-zero pockets
Roulette wheels contain numbered pockets that determine the outcome. The fewer pockets the casino adds that are not part of the 1–36 number set, the better it is for players in terms of expected value.
European roulette wheel (single-zero)
- 37 pockets total
- Numbers 1 to 36 plus a single 0
This is the classic format across much of Europe and is also widely available online.
American roulette wheel (double-zero)
- 38 pockets total
- Numbers 1 to 36 plus 0 and 00
That extra 00 pocket is the big deal. It increases the built-in advantage the casino has on standard bets, which matters most if you play many spins or prefer even-money bets like red/black.
House edge explained (and why it matters to your expected return)
The house edge is the casino’s mathematical advantage, expressed as a percentage of each bet in the long run. It does not predict short-term results (you can win or lose in any session), but it does describe your expected cost of playing over many spins.
Standard house edge: European vs American roulette
On standard roulette bets (with standard payouts), the house edge is:
- European roulette: about 2.70%
- American roulette: about 5.26%
In practical terms, American roulette roughly doubles the house edge compared to European roulette. If you’re choosing between the two, this is the single most important factor for players focused on better expected returns.
French roulette: the European-style option that can improve even-money bets
French roulette is typically played on a single-zero wheel (like European roulette), but it may add special rules that benefit players on even-money bets (also called outside bets), such as:
- Red / Black
- Odd / Even
- 1–18 / 19–36
Two classic French rules to know are la partage and en prison. When applied to even-money bets, they can reduce the effective house edge to about 1.35%.
La partage (share)
If the ball lands on 0 and you made an even-money bet, you lose only half your stake and get the other half back.
This rule is simple, fast, and immediately valuable for players who like outside bets.
En prison (in prison)
If the ball lands on 0 and you made an even-money bet, your bet is “imprisoned” for the next spin instead of losing immediately. On the next spin:
- If your even-money bet wins, you typically get your stake back (net result: no win, no loss for that sequence).
- If it loses, you lose your stake.
Depending on the exact house procedure, the effect on even-money bets is often similar to la partage, producing an effective edge of about 1.35% on those bets when used in the standard way.
Quick comparison table: European vs American vs French roulette
| Feature | European Roulette | American Roulette | French Roulette |
|---|---|---|---|
| Total pockets | 37 | 38 | 37 (typically) |
| Zeros | 0 | 0 and 00 | 0 |
| Standard house edge (most bets) | ~ 2.70% | ~ 5.26% | ~ 2.70% (standard), but lower on even-money with special rules |
| Even-money with la partage / en prison | Not usually | No | Effective ~ 1.35% (when offered) |
| Where you commonly see it | Europe, global online casinos | More common in the U.S. | French-style tables, some European casinos, some online lobbies |
Do the bet types and payouts change between European and American roulette?
The good news: most bet types and payouts are the same between European and American roulette. That means you don’t have to relearn the core game just because you switch wheels.
Common bets you’ll see on both include:
- Straight up (single number): pays 35 to 1
- Split (two numbers): pays 17 to 1
- Street (three numbers): pays 11 to 1
- Corner (four numbers): pays 8 to 1
- Six line (six numbers): pays 5 to 1
- Dozens and columns (12 numbers): pays 2 to 1
- Even-money outside bets (red/black, odd/even, high/low): pays 1 to 1
So what’s different if payouts are the same? The number of pockets. When you add an extra losing pocket (the 00), the payouts don’t increase to compensate, so the house edge rises.
Table layout differences: what you’ll notice at a glance
Even before the wheel spins, the table design can give you clues about the roulette variant.
American roulette table layout
American layouts typically show both 0 and 00 at the top of the betting grid. Many tables place them side-by-side or in a distinctive top section, making it easy to recognize quickly.
European roulette table layout
European layouts typically feature a single 0 at the top of the grid.
French roulette table layout
French roulette tables may look different again, often using French terms and a layout that emphasizes outside betting areas. If you see signage or rules referencing la partage or en prison, that’s a strong signal you’re at (or close to) a player-friendly table for even-money bets.
Why single-zero tables are a smart priority for value-focused players
If your goal is to get more mileage from your bankroll and keep the math as favorable as roulette allows, prioritizing single-zero (European) or French roulette is a straightforward win.
Here’s why that choice can feel so different in practice:
- Lower house edge can mean slower long-run cost per spin, helping your budget last longer.
- Better conditions for even-money betting when French rules like la partage or en prison are offered.
- No need to change your betting style because the popular bet types and payouts are essentially identical across variants.
Players who enjoy longer sessions, prefer steadier outside bets, or simply like optimizing expected value typically gravitate toward single-zero options for these reasons.
Regional availability: where you’re more likely to find each roulette type
Your best option sometimes depends on where you’re playing.
- American roulette is more common in the United States, particularly in traditional land-based casinos.
- European roulette is widely available across Europe and is also a standard offering in many online casino lobbies worldwide, where players often also play black jack online.
- French roulette (and especially tables that apply la partage or en prison) may appear in certain European casinos or as a distinct online game variant, often clearly labeled by name or rule set.
When you have a choice, selecting a table with one zero is one of the simplest ways to improve your expected return—without changing the excitement of the game.
How to choose the best roulette table in 30 seconds
If you want a quick, practical checklist you can use in a casino or online lobby, start here:
- Look for the zeros first. Choose 0 over 0 and 00.
- Scan for French rules on even-money bets. If you see la partage or en prison, that’s a strong positive for outside bettors.
- Confirm it’s standard roulette payouts. Typical roulette pays 35 to 1 on a straight-up number bet.
- Match the table to your betting style. If you enjoy red/black and other even-money bets, French rules can be especially valuable.
FAQ: European vs American roulette
Is European roulette always better than American roulette?
From a house edge perspective on standard bets, European roulette is typically better because the single-zero wheel produces a lower edge (about 2.70% vs 5.26%). If you care about expected return, single-zero is the priority.
Does American roulette have different payouts?
In standard roulette, payouts are generally the same across European and American roulette (for example, 35 to 1 on a straight-up bet). The difference in player value comes from the extra 00 pocket, not from higher or lower payouts.
What is the best roulette variant for even-money bets?
If available, French roulette with la partage or en prison is often the best for even-money bets because it can reduce the effective house edge on those bets to about 1.35%.
How can I tell what roulette I’m playing?
Check the wheel or the betting layout:
- One green pocket labeled 0= European-style (single-zero).
- Two green pockets labeled 0 and 00= American (double-zero).
- French terms or rules like la partage or en prison= French roulette (often single-zero with beneficial even-money rules).
Bottom line: the fastest upgrade you can make as a roulette player
If you remember just one thing, make it this: choose single-zero roulette whenever you can. European roulette’s 37-pocket wheel delivers a lower house edge than American roulette’s 38-pocket wheel, and French roulette can go a step further by improving the math on even-money bets with la partage or en prison.
That means you can keep the same classic roulette experience—same excitement, same bet types, same familiar payouts—while giving yourself a better expected return and potentially longer, more enjoyable sessions.
