If you want a simple way to improve your long-term roulette results without changing your betting style, start with the game variant. The difference between European vs American roulette is not cosmetic: it directly changes your house edge, your roulette odds, and how far your bankroll can typically stretch.
At a glance, European roulette uses a single zero (0) and has 37 pockets total. American roulette adds a double zero (00), creating 38 pockets. The payouts on bets (like 35:1 for a single number) stay the same, but the extra pocket in American roulette increases the casino advantage and lowers player odds across the board, especially on even-money and other outside bets.
Quick comparison: European vs American vs French roulette
| Variant | Wheel pockets | Zero pockets | Typical house edge | Best for |
|---|---|---|---|---|
| European roulette | 37 | 0 | About 2.70% | Better value on all bets vs American |
| American roulette | 38 | 0 and 00 | About 5.26% | Players who prefer the American layout or find it more available |
| French roulette | 37 | 0 | About 2.70% overall, but about 1.35% on even-money bets with La Partage or en prison | Outside-bet players seeking the lowest effective edge on even-money bets |
The biggest “win” for players comes from choosing the variant with fewer zero pockets and, when possible, rules that soften the impact of a zero result.
Single zero vs double zero: the one change that reshapes everything
Roulette is designed so that payouts are based on the ideal probability you would have in a wheel with no extra house pockets. That’s why a straight-up number pays 35:1: in a perfect 36-number game, the fair payout would match a 1-in-36 hit rate.
Real wheels add at least one zero pocket, which creates a built-in gap between the true odds of winning and the payout odds. This gap is the house edge.
European roulette (single zero) basics
- Total pockets: 37 (numbers 1 to 36, plus 0)
- True probability of hitting a specific number: 1 / 37 (about 2.70%)
- House edge (standard rules): 1 / 37≈2.70%
American roulette (double zero) basics
- Total pockets: 38 (numbers 1 to 36, plus 0 and 00)
- True probability of hitting a specific number: 1 / 38 (about 2.63%)
- House edge (standard rules): 2 / 38≈5.26%
Because American roulette has two zero pockets instead of one, it effectively doubles the casino advantage compared with European roulette. That difference is especially noticeable for players who spend most of their time on outside bets like red/black or odd/even.
“But the payouts are the same.” Exactly, and that’s the problem
A key concept in roulette odds is that the payouts do not improve to compensate for the extra 00 on American wheels. For example:
- Straight-up (single number) still pays 35:1 in both variants.
- Red/Black still pays 1:1 in both variants.
- Dozens and columns still pay 2:1 in both variants.
So when you add another losing pocket (00) while keeping payouts fixed, the math shifts against you. Your bet wins slightly less often, but it doesn’t pay more when it does win.
How the extra zero hits outside bets the hardest
Outside bets (sometimes called “even-money” or “external” bets) include:
- Red / Black
- Odd / Even
- High (19–36) / Low (1–18)
- Dozens (1–12, 13–24, 25–36)
- Columns
These bets feel “safer” because they win more often than inside bets. However, the zeros are outside-bet killers: if the ball lands on 0 (and 00 in American), those outside bets lose under standard rules.
Even-money bet math: European vs American
| Bet type | European roulette (37 pockets) | American roulette (38 pockets) |
|---|---|---|
| Red / Black (1:1) | Win probability: 18/37 Lose probability: 19/37 (includes 0) | Win probability: 18/38 Lose probability: 20/38 (includes 0 and 00) |
| Dozen (2:1) | Win probability: 12/37 Lose probability: 25/37 | Win probability: 12/38 Lose probability: 26/38 |
That one extra pocket in American roulette doesn’t just add “a tiny bit” of disadvantage. It increases the number of outcomes where an outside bet loses while the payout stays fixed, which is why the house edge jumps to about 5.26%.
French roulette advantage: La Partage and en prison
French roulette is commonly considered a European-style game (single zero, 37 pockets), but it may include special rules that improve outcomes on even-money bets. The two flagship rules are La Partage and en prison.
La Partage (share the bet)
With La Partage, when you place an even-money bet (like red/black) and the ball lands on 0, you lose only half of your stake instead of the full amount.
This rule reduces the effective house edge on even-money bets to about 1.35% (roughly half of the standard European 2.70%).
En prison (in prison)
With en prison, when you place an even-money bet and 0 hits, your bet is not lost immediately. 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 it loses, you lose the stake.
- If 0 hits again, the exact handling depends on table rules, but the core idea is a second chance.
In practical terms, for even-money bets, en prison is also commonly treated as bringing the effective house edge down to about 1.35%, similar to La Partage.
Why these rules are a big deal for bankroll-friendly play
If you enjoy the rhythm of outside bets (steady, frequent wins and smaller swings), La Partage and en prison can be the single most player-friendly rule change you’ll find in mainstream roulette. You’re not changing your strategy; you’re improving the underlying math.
Inside vs outside bets: what they are and how they feel
Roulette betting is often grouped into inside bets (placed on the number grid) and outside bets (placed on sections like red/black, dozens, columns).
Inside bets (higher volatility)
Inside bets usually pay more because they win less often. Common inside bets include:
- Straight-up (one number): pays 35:1
- Split (two numbers): pays 17:1
- Street (three numbers): pays 11:1
- Corner (four numbers): pays 8:1
- Six line (six numbers): pays 5:1
These bets can create exciting spikes in results, but they also tend to produce longer losing stretches.
Outside bets (lower volatility)
Outside bets win more frequently, so the session often feels smoother:
- Even-money bets (red/black, odd/even, high/low): pays 1:1
- Dozens and columns: pays 2:1
If your goal is to extend playtime, reduce swinginess, and keep decision-making simple, outside bets pair especially well with European or French rules.
House edge explained in plain terms (with a simple example)
House edge is the casino’s average advantage over a very long run, expressed as a percentage of each bet. It is not a prediction of what will happen in your next 20 spins, but it does describe the long-term cost of playing a given game.
Example: imagine repeatedly betting 10 units on red.
- In European roulette (2.70% house edge), the long-run expected loss is about 0.27 units per 10-unit bet.
- In American roulette (5.26% house edge), the long-run expected loss is about 0.526 units per 10-unit bet.
That difference adds up faster than many players expect, especially across hundreds of spins. Choosing a single-zero wheel is one of the most practical “edge upgrades” available.
Roulette odds and payouts: a compact reference
The table below summarizes common bet types. Payouts are typically the same in European and American roulette, but the probability of winning changes because the number of pockets changes.
| Bet | Covers | Typical payout | Win probability (European) | Win probability (American) |
|---|---|---|---|---|
| Straight-up | 1 number | 35:1 | 1/37 | 1/38 |
| Split | 2 numbers | 17:1 | 2/37 | 2/38 |
| Street | 3 numbers | 11:1 | 3/37 | 3/38 |
| Corner | 4 numbers | 8:1 | 4/37 | 4/38 |
| Six line | 6 numbers | 5:1 | 6/37 | 6/38 |
| Dozen / Column | 12 numbers | 2:1 | 12/37 | 12/38 |
| Even-money (Red/Black etc.) | 18 numbers | 1:1 | 18/37 | 18/38 |
Notice the pattern: the win probability is always “covered outcomes divided by total pockets.” American roulette always has a slightly lower win probability because the total pockets are higher, while payouts generally remain unchanged.
Layout and wheel differences: what you’ll actually see at the table
Beyond the math, the physical and visual differences can influence comfort and speed of play; players who also enjoy black jack online may notice different table pacing and flow between games.
American roulette table layout
- The betting layout includes 0 and 00, usually at the top of the grid.
- Some players find the extra space and familiar design easier to read if they learned roulette in North America.
European roulette table layout
- The layout includes only 0.
- The single-zero design tends to look cleaner and keeps the game closer to the “classic” probability structure.
Wheel labeling and pocket sequence
European and American wheels are arranged differently, and the location of numbers around the wheel is not in numerical order. The sequence is designed to distribute high/low and red/black numbers. The key practical takeaway is simple: the number of zero pockets is what drives the difference in house edge, not the cosmetic styling of the wheel.
Volatility: choosing the kind of session you want
Volatility describes how “swingy” your results can be in the short term. Roulette can be played with low volatility (more frequent small wins and losses) or high volatility (rarer but larger wins).
What increases volatility
- Leaning heavily on inside bets like straight-ups and splits
- Placing many small-probability bets at once
- Using aggressive progression systems (increasing stakes quickly after losses)
What reduces volatility
- Focusing on outside bets (even-money, dozens, columns)
- Using flat betting (same stake each spin)
- Playing single-zero variants, especially French rules for even-money bets
Matching volatility to your goals can make roulette more enjoyable and more manageable. If you prefer steadier sessions, a European wheel with outside bets is a strong baseline, and French La Partage or en prison can improve it further.
Bankroll management tips that work with roulette math (not against it)
Roulette is a negative-expectation game in the long run because of the house edge, but smart bankroll management can help you control risk, play longer, and avoid common pitfalls.
1) Pick the lowest house edge version you can
- Prioritize single zero vs double zero whenever possible.
- If you like even-money bets, look for La Partage or en prison to target an effective edge near 1.35% on those bets.
2) Set a session budget and a stop point
Define a maximum session loss you are comfortable with and a realistic win goal. Having clear limits supports disciplined play and helps prevent “chasing.”
3) Use consistent bet sizing for steadier control
Flat betting (for example, 1 to 2% of your bankroll per spin) reduces the chance that a short losing streak forces you out of the game quickly.
4) Understand what betting systems can and cannot do
Progression systems can change the pattern of wins and losses, but they do not remove the house edge. A single-zero wheel reduces the cost of each bet; no staking plan can replicate that structural advantage on a double-zero wheel.
5) Choose bets that fit your risk tolerance
- If you value frequent hits: lean toward outside bets.
- If you want big payout potential and accept longer droughts: mix in inside bets.
Practical takeaways: which roulette variant should you choose?
Choose European roulette when you want better odds with standard rules
European roulette’s single zero delivers a materially better baseline than American roulette. With a house edge around 2.70%, it’s a strong default choice for most players.
Choose French roulette when you mostly play even-money bets
If you enjoy red/black, odd/even, or high/low, French roulette with La Partage or en prison can be a standout option because it can reduce the effective house edge on those bets to about 1.35%.
Choose American roulette only when availability or preference outweighs the cost
American roulette is widely recognized and may be more accessible in certain venues. Just be aware that the double zero increases the house edge to about 5.26%, which can noticeably reduce your long-term value for the same style of play.
FAQ: European vs American roulette (and French rules)
Is European roulette always better than American roulette?
From a math and value perspective, European roulette is typically better because the single zero yields a lower house edge (about 2.70% vs about 5.26%). Other factors like table limits, comfort, and pace still matter, but the single-zero advantage is straightforward.
Do European and American roulette pay the same?
Yes, in most standard games the payouts (like 35:1 on a straight-up bet) are the same. That’s why the extra 00 in American roulette is so impactful: it lowers your win probability without increasing your payout.
What is La Partage in roulette?
La Partage is a French roulette rule for even-money bets. If the ball lands on 0, you lose only half your stake rather than the full stake, which reduces the effective house edge on those bets to about 1.35%.
What is en prison in roulette?
En prison is another French roulette rule for even-money bets. When 0 hits, your bet is held for the next spin, giving it a chance to be returned if the next outcome wins (exact handling can vary by table rules).
Do inside bets have a different house edge than outside bets?
Under standard rules, the house edge is broadly the same across bet types within the same roulette variant, because the payouts are set so that the zero pocket(s) create a consistent advantage. The main difference is volatility: inside bets swing more.
Bottom line: the best “strategy” starts with the right wheel
If you remember only one thing, make it this: the choice between single zero vs double zero is one of the few decisions in roulette that clearly and measurably changes your long-term value.
- For the best all-around odds, pick European roulette (about 2.70% house edge).
- For even-money players, seek French roulette with La Partage or en prison (about 1.35% effective house edge on even-money bets).
- Approach American roulette with eyes open: the double zero raises the house edge to about 5.26%.
Once you start on the right wheel, everything else gets easier: your bankroll typically lasts longer, your sessions feel more efficient, and your roulette decisions become clearer and more confident.
