Roulette feels familiar no matter where you play: a spinning wheel, a bouncing ball, and simple bets like red/black or a single number. But the variant you choose matters more than most players realize. The main difference between European (and French) roulette and American roulette is the wheel layout, and that layout directly changes your probability of winning on every bet you place.
Here is the key takeaway you can use immediately: European roulette has one zero (0) for 37 pockets total, while American roulette adds a double zero (00) for 38 pockets total. That single extra pocket pushes the house edge from about 2.70% to roughly 5.26%, meaning your expected losses are nearly doubled over time when you play double-zero roulette.
This guide breaks down exactly how that extra zero changes the odds, explains common roulette bet types and payouts, compares typical RTP, and shares practical tips on bankroll management and smart game selection (including French rules like la partage and en prison that can reduce losses on even-money bets).
European vs American Roulette: The Wheel Layout (and Why It Matters)
Roulette outcomes are determined by which pocket the ball lands in. The number of pockets is the foundation of every probability and every expected return.
European roulette wheel
- Numbers: 1 to 36
- Green pocket(s): single 0
- Total pockets:37
French roulette wheel
- Wheel pockets: also 37 (1 to 36 plus a single 0)
- What makes it special: often includes table rules like la partage or en prison on even-money bets
American roulette wheel
- Numbers: 1 to 36
- Green pocket(s):0 and 00
- Total pockets:38
Because payouts on standard bets are typically the same across variants, the extra 00 increases the casino advantage by lowering your win probability on every bet.
How the Extra Zero Changes Probabilities (With Simple Examples)
Roulette is a great game to understand because the math is transparent. Each pocket has (approximately) equal chance, so probability is just 1 divided by the number of pockets, adjusted for how many pockets your bet covers.
Example 1: Betting a straight-up number
A straight-up bet covers exactly one number (like 17) and usually pays 35 to 1.
- European/French: win probability is 1/37 (about 2.70%)
- American: win probability is 1/38 (about 2.63%)
That looks like a small change, but it affects your expected results every time you bet.
Example 2: Betting red/black (an even-money bet)
Red/black is a classic “outside” bet and usually pays 1 to 1. There are 18 red numbers and 18 black numbers on standard wheels.
- European/French: if you bet red, you win on 18 pockets out of 37, so your win probability is 18/37 (about 48.65%)
- American: if you bet red, you win on 18 pockets out of 38, so your win probability is 18/38 (about 47.37%)
The extra green pocket (00) is not just “another number.” It is another way for your bet to lose while the payout stays the same. That is why the house edge jumps so noticeably in American roulette.
House Edge and RTP: European vs American (and French Rule Boosts)
Two numbers matter most for smart roulette choices:
- House edge: the casino’s average advantage per unit wagered over the long run
- RTP (Return to Player): the long-run percentage returned to players on average (RTP = 100% minus house edge)
For standard roulette with typical payouts:
- European roulette: house edge about 2.70% (RTP about 97.30%)
- American roulette: house edge about 5.26% (RTP about 94.74%)
That difference is meaningful. If two players place the same total amount of wagers, the player choosing European roulette is generally positioned to lose less over time, simply because the game is more favorable.
French roulette and even-money rules: la partage and en prison
French roulette often uses rules that apply to even-money bets (like red/black, odd/even, and high/low). Two of the most common are:
- La partage: if the ball lands on 0, even-money bets lose only half (you get half your stake back).
- En prison: if the ball lands on 0, your even-money bet is “imprisoned” for the next spin. If your bet wins on the next spin, you usually get your stake back (rather than a full 1 to 1 payout). If it loses, you lose the stake.
When applied correctly to even-money bets on a single-zero wheel, these rules effectively reduce the house edge on those bets to about 1.35%, which is a strong improvement for players who enjoy outside betting and longer sessions.
Quick Comparison Table: European vs American vs French Roulette
| Feature | European Roulette | American Roulette | French Roulette |
|---|---|---|---|
| Total pockets | 37 (0, 1–36) | 38 (0, 00, 1–36) | 37 (0, 1–36) |
| Green pockets | Single 0 | 0 and 00 | Single 0 |
| Typical house edge | ~2.70% | ~5.26% | ~2.70% standard; ~1.35% on even-money bets with la partage or en prison |
| Typical RTP | ~97.30% | ~94.74% | ~97.30% standard; higher effective RTP on even-money bets with favorable rules |
| Best for | Players who want better odds with classic rules | Players who only find double-zero tables locally | Players who like even-money bets and want reduced losses on 0 outcomes |
Common Roulette Bet Types (Inside vs Outside) and Standard Payouts
Roulette bets are usually grouped into two categories:
- Inside bets: placed on specific numbers or small groups of numbers on the inside of the layout (higher variance, bigger payouts).
- Outside bets: placed on broad outcomes like red/black or dozens (lower variance, smaller payouts).
Inside bets (common options)
- Straight-up: 1 number, pays 35 to 1
- Split: 2 adjacent numbers, pays 17 to 1
- Street: 3 numbers in a row, pays 11 to 1
- Corner: 4-number square, pays 8 to 1
- Line (double street): 6 numbers, pays 5 to 1
Outside bets (common options)
- Red/Black: pays 1 to 1
- Odd/Even: pays 1 to 1
- High/Low: (19–36 vs 1–18) pays 1 to 1
- Dozens: (1–12, 13–24, 25–36) pays 2 to 1
- Columns: pays 2 to 1
These payout structures are designed so that, over the long run, the presence of the green pocket(s) creates the casino advantage. The payouts do not “compensate” for the zero(s), which is exactly why choosing the right variant is such a powerful player decision.
Why Payouts Look the Same but Your Results Don’t
Many players assume that because the payouts (like 35 to 1 on a straight-up) are identical, the game is equivalent. The difference is that roulette payouts are not based on true odds:
- European straight-up true odds: 36 to 1 would be fair for a 1-in-37 event, but the table pays 35 to 1.
- American straight-up true odds: 37 to 1 would be fair for a 1-in-38 event, but the table still pays 35 to 1.
This gap between true odds and paid odds is what creates the house edge. Adding 00 widens that gap across the board.
Practical Recommendations: How to Pick the Best Roulette Game
1) Favor single-zero (European) roulette whenever possible
If you have a choice between single-zero and double-zero roulette, choosing single-zero is one of the simplest ways to improve your long-run results. The expected loss rate drops from about 5.26% to about 2.70%.
In practical terms, that means that for the same total amount wagered, European roulette generally leads to roughly half the expected losses compared with American roulette. It does not guarantee outcomes in a short session, but it is a strong long-term advantage.
2) Seek French roulette with la partage or en prison for even-money play
If you enjoy red/black, odd/even, or high/low bets, French rules can be a meaningful upgrade. With la partage or en prison, the “sting” of the 0 is reduced on even-money wagers, lowering the house edge on those specific bets to about 1.35%.
This is especially helpful for players who prefer lower volatility and want bankroll-friendly sessions.
3) Be cautious with American roulette and specialty bets
American roulette is common in many land-based casinos, especially in the United States, and you may not always have a choice. If you do play it, be aware that the odds are less favorable and plan your bankroll accordingly.
Also note that some American layouts include a five-number bet (0, 00, 1, 2, 3) that typically pays 6 to 1. This bet is widely known for having a significantly higher house edge than standard bets, so it is usually a poor value choice if your goal is to stretch your bankroll.
Where Each Variant Is Commonly Found (Land-Based vs Online)
Land-based casinos
- American roulette: commonly found in many casinos in the United States and in venues that standardize around double-zero wheels.
- European roulette: more common in many European casinos and international venues that cater to European players.
- French roulette: often found in European settings and in rooms that explicitly offer French-style layouts and rules.
Online roulette
Online platforms frequently offer multiple variants side-by-side, and you can also play blackjack, which is great for players because choice is power. You can often find:
- European roulette as a standard option
- French roulette with la partage or en prison
- American roulette for players who prefer it or want variety
Because online menus can be crowded, it is worth checking the game rules panel for the number of zeros and any even-money protections before you start betting.
Bankroll Management Tips That Fit Roulette (Simple, Practical, and Effective)
Roulette is a negative-expectation game in the long run, so good bankroll habits are not just “nice to have.” They are how you keep the experience fun, controlled, and sustainable.
1) Set a session bankroll and treat it as the cost of entertainment
Decide what you are comfortable spending for the session before the first spin. Once that amount is gone, you are done. This keeps roulette enjoyable and prevents losses from turning into stressful decisions.
2) Use smaller unit sizes to increase staying power
If your session bankroll is $200, betting $5 per spin typically gives you more time and flexibility than betting $20 per spin. More spins can mean more entertainment value and smoother variance, especially with outside bets.
3) Understand volatility: inside bets swing harder
- Inside bets: higher payouts but more frequent losing spins
- Outside bets: smaller payouts but more frequent wins (with the important caveat that green zeros still create a long-run edge)
If your goal is longer play time, outside bets on a single-zero wheel are generally more bankroll-friendly than frequent straight-up bets.
4) Pick your “stop points” in advance
Two pre-set rules can dramatically improve the quality of your session:
- Stop-loss: the maximum you are willing to lose (often equal to your session bankroll)
- Win goal: a realistic target where you will consider ending the session if reached
This approach does not change the math, but it helps you avoid decision-making fatigue and protects your time and money.
5) Avoid raising bets to “chase” losses
Progression systems can feel tempting because they promise quick recovery. In reality, they increase risk and can cause large losses during normal losing streaks. A steady staking plan is often a better match for roulette’s randomness.
How to Read the Rules Like a Pro (Fast Checklist Before You Play)
Whether you are sitting at a physical table or selecting a game online, you can make a smart choice in under a minute by checking:
- Number of zeros: choose single-zero when available
- Even-money protections: look for la partage or en prison if you plan to bet red/black, odd/even, or high/low
- Any special bets: be cautious with bets that are unique to a layout (like the five-number bet on some American tables)
- Table limits: confirm the minimum and maximum suit your bankroll plan
Choosing the Best Variant for Your Goals
If you want the best overall odds
European roulette is the go-to: single-zero, widely available, and materially better RTP than double-zero roulette.
If you like even-money bets and want to reduce the impact of 0
French roulette with la partage or en prison can be an excellent choice, particularly for players who enjoy steady, lower-volatility betting.
If American roulette is the only option
You can still have fun, but it helps to go in with the right expectations. Use smaller bet sizes, consider shorter sessions, and remember that the built-in edge is higher due to the extra 00.
Bottom Line: The Extra Zero Is Not a Detail, It Is the Whole Game
European and American roulette look similar, but the difference between 37 and 38 pockets changes your probability on every spin. European roulette’s single zero creates a house edge of about 2.70%, while American roulette’s added 00 lifts it to roughly 5.26%. If you want a more player-friendly experience, choosing European (or French) roulette is one of the smartest, easiest decisions you can make at the table.
And if you enjoy outside bets, French rules like la partage and en prison can further reduce expected losses on even-money wagers, helping your bankroll last longer and making each session feel more rewarding.
Quick FAQs
Is European roulette always better than American roulette?
From an odds perspective, yes: the single-zero wheel has a lower house edge than the double-zero wheel with standard payouts. That said, your enjoyment can also depend on table availability, limits, and preferred betting style.
Do French roulette rules change payouts?
Standard payouts for bets are usually the same, but rules like la partage and en prison change what happens to even-money bets when 0 hits, which improves the expected value of those bets.
What is the best simple strategy for roulette?
The most reliable “strategy” is game selection and bankroll control: choose single-zero (or French with favorable rules), bet within a set budget, and avoid chasing losses. This does not eliminate the house edge, but it meaningfully improves your experience and expected results compared with double-zero play.
