The Double Zero Is the Whole Conversation
Walk past a roulette pit in a casino that offers both wheel types and you will usually see the same thing: the European-style single-zero table is full, while the American double-zero table has open seats. The reason is not a secret. The extra pocket changes the arithmetic of every bet on the layout, and most players who have read anything about roulette know it. So the question is a fair one. If the American wheel is mathematically worse, why does it exist, and why would a player who understands the numbers ever sit down at one?
The honest answer has several parts. Availability is the first. In many regions, the American wheel is simply what the venue offers. A player who wants to play roulette at all plays the wheel that is in front of them, or they do not play. Beyond that, the American layout has a few structural features that some players genuinely prefer, and the edge difference, while real, is often smaller in practice than the way it is usually described.
What the Two Wheels Are
A roulette wheel is a numbered disc with pockets around its rim. The ball is spun in the opposite direction to the wheel and eventually settles in one pocket. The bets are placed on a printed layout that mirrors the wheel's numbers, and every bet pays according to the probability of the outcome it covers, minus the house's built-in advantage.
The defining difference between the two common wheel types is the number of pockets:
| Feature | European wheel | American wheel |
|---|---|---|
| Pockets | 37 | 38 |
| Zero pockets | One (single zero) | Two (single zero and double zero) |
| Number range | 0 to 36 | 0 to 36 plus 00 |
| Effect on even-money bets | Zero loses | Both zeros lose |
| Effect on straight-up bets | 35 to 1 payout | 35 to 1 payout |
The payout for a winning straight-up bet is the same on both wheels: 35 to 1. But the chance of hitting any single number is worse on the American wheel, because there are 38 possible resting places for the ball instead of 37. The payout did not change to compensate for the extra pocket. That gap between the payout and the true odds is the house edge, and it is larger on the American layout for every bet that does not involve the zeros themselves.
Where the Edge Difference Shows Up
The house edge on a roulette bet is the percentage of each wager the operator expects to retain over a very large number of spins. It is a long-run statistical average, not a per-session guarantee, and it applies to the specific bet under the specific rule set of the wheel in use.
On a European wheel, the single zero is what gives the house its advantage on the even-money bets. On an American wheel, the double zero adds a second losing pocket for those same bets, which is why the edge on red, black, odd, even, high and low is higher. For straight-up bets, the same logic applies: the payout is identical, but the probability of winning is lower.
There is one exception worth knowing. A small number of American tables offer a rule called surrender, where an even-money bet loses only half the stake when the ball lands in zero or double zero. Where that rule is in force, the edge on those specific bets is reduced. The rule is not universal, and it is printed on the table's signage where it applies. A player who wants to know their exact edge on a given bet should read the table rules posted at the wheel, because the rule set is what determines the number.
What a Round Looks Like on an American Table
The sequence of play is the same on both wheel types. A player buys in at the table, receiving coloured chips that are distinct from the cash-value chips used at other tables. Roulette chips have no denomination printed on them; their value is set when the player buys in and is recorded by the dealer. This is one of the first things new players misunderstand, and it matters at settlement time.
Once the bets are placed, the dealer spins the wheel and launches the ball. The dealer calls no more bets at a certain point in the spin, and from that moment the layout is frozen. When the ball settles, the dealer marks the winning number, clears the losing bets, and pays the winners. The player's coloured chips are then converted back to cash-value chips at the cage or at the table when they leave.
The decision points for the player are few. Roulette is not a game of hand composition or drawing strategy. The player chooses which bets to place, how much to stake on each, and when to stop. Everything else is mechanical.
The Bets on the Layout
Roulette bets fall into two broad groups: inside bets, which sit on the numbered grid, and outside bets, which sit around its edges. They differ in probability, payout, and house edge, and the comparison matters more than most casual players assume.
| Bet | What it covers | Payout | Nature of the risk |
|---|---|---|---|
| Straight up | One number | 35 to 1 | Low hit rate, large payout |
| Split | Two adjacent numbers | 17 to 1 | Moderate hit rate |
| Street | Three numbers in a row | 11 to 1 | Moderate hit rate |
| Corner | Four numbers in a block | 8 to 1 | Higher hit rate |
| Six line | Six numbers in two rows | 5 to 1 | Higher hit rate |
| Red or black | 18 numbers of one colour | 1 to 1 | Near-even money, zeros lose |
| Odd or even | 18 numbers | 1 to 1 | Near-even money, zeros lose |
| High or low | 18 numbers | 1 to 1 | Near-even money, zeros lose |
On an American wheel, every one of these bets carries a higher house edge than the same bet on a European wheel, because the double zero is an additional losing pocket that no payout adjustment covers. The difference is not a matter of opinion; it is built into the wheel's structure. A player who wants the lowest edge on an American table is still playing a game whose edge is higher than the European equivalent on the same bet.
Why a Player Might Still Choose the American Wheel
The most common reason is availability. In many venues, particularly in certain regions, the American wheel is the standard roulette product. A player who wants to play roulette and is not near a single-zero table faces a simple choice: play the double-zero wheel or do not play roulette. For many, the game itself is the draw, and the edge difference is an accepted cost of sitting down.
Some players prefer the American layout's pace and table culture. The double-zero wheel is often found on the main floor, with lower minimums and a more relaxed atmosphere than the single-zero tables, which are sometimes positioned as higher-limit or reserved areas. A player who wants a low-stakes session may find the American table is the only roulette option at their price point.
There is also a structural preference. The American layout places the double zero at the opposite end of the wheel from the single zero, which changes the distribution of numbers around the wheel. Some players who use wheel-section bets, where chips are placed to cover a contiguous arc of numbers, prefer the American arrangement. This is a matter of physical layout and personal habit, not an advantage, but it is a genuine reason some regulars give for choosing one wheel over the other.
The Mistakes That Cost More Than the Wheel Choice
The edge difference between the two wheels is real, but it is often smaller than the mistakes a player makes at the table. The first is betting without knowing the table minimum and how it interacts with inside bets. A player who wants to spread chips across several numbers needs to know whether the table minimum applies to each bet or to the total stake, and the rule varies by venue. The dealer or the table signage will state it.
The second is mishandling the coloured chips. Because roulette chips have no printed value, a player who leaves the table with them and tries to cash them at another table or the cage will find they are worthless. They must be converted at the roulette table where they were issued. This is a procedural error, not a strategic one, but it is common enough that dealers remind players as they leave.
The third is chasing the zeros. Some players place straight-up bets on zero and double zero, reasoning that the extra pocket makes them more likely. The payout on those bets is the same 35 to 1 as any other single number, and the probability is identical to any other single number. The zeros are not more likely to hit because they are zeros; they are just two more pockets on a wheel that already has 36 numbered ones.
What Strategy Charts Do and Do Not Do for Roulette
Roulette does not have a basic-strategy chart in the sense that blackjack does. There is no decision tree that changes the house edge on a given bet. The only choices that change the player's expected rate of loss are which bets to place and how much to stake on each. A player who wants the lowest edge on an American wheel should look for the even-money bets, and should check whether the table offers the surrender rule, which reduces the edge on those bets where it applies.
No betting pattern changes the built-in edge of the wheel. A progression system, where the player doubles a losing bet or increases stakes after a win, redistributes outcomes across a session but does not remove the house advantage. The wheel has no memory, and the ball is not more likely to land on red because the last five spins were black. The only reliable way to change the expected rate of loss is to change the bet type or the wheel type, and the second option is only available where a single-zero table exists.
FAQ
Is American roulette always the worse choice?
On the arithmetic of the house edge, yes. The double zero increases the edge on every standard bet compared with a single-zero wheel under the same rule set. But the choice is not always available. Where only an American wheel is offered, the comparison is between playing that wheel and not playing roulette at all, and some players accept the higher edge as the price of the game.
Does the double zero change the payout on inside bets?
No. A straight-up bet pays 35 to 1 on both wheel types. What changes is the probability of winning, because there are 38 pockets instead of 37. The payout stays the same while the chance of hitting any single number falls, which is exactly where the higher house edge comes from.
Can a player reduce the American wheel's edge by covering more numbers?
Covering more numbers increases the chance of winning on any given spin, but it also increases the total amount wagered, and each bet still carries its own house edge. A player who covers 20 numbers is more likely to win something, but the payout on the winning bet is smaller relative to the total stake, and the house edge applies to every chip on the layout. No combination of bets removes the double zero from the wheel.
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