The zero is a number like any other, until it is not
You put a chip on the green zero, the ball lands there, and the dealer slides 35 chips next to your original stake. That part is simple: a straight-up bet on any single number, including 0, pays 35 to 1. The less obvious part is what the zero does to every other bet on the table when it lands, and why the presence of that one green pocket changes the arithmetic of the whole game.
On a European wheel there are 37 pockets: the numbers 1 through 36 plus a single zero. A straight-up wager on the zero wins exactly as often as a straight-up wager on 17 or 23, and it pays the same 35 to 1. The difference is that the zero is not red, not black, not odd, not even, not high and not low. When it appears, the outside bets that depend on those categories lose, or in some rule sets are held or halved depending on the table's stated conventions.
What 35 to 1 means at the table
A payout expressed as 35 to 1 is a ratio, not a total return. If you bet one unit on the zero and it wins, the house pays you 35 units in winnings and your original one-unit stake stays on the table for you to take back. You leave the bet with 36 units in hand: the 35 you won plus the stake you never lost.
If you had bet five units, the win pays 175 units and you keep the five-unit stake. The ratio stays fixed; only the stake scales it. The same 35-to-1 ratio applies to every straight-up number on the layout, which is why the zero is not special in its payout. It is special in its colour and in the fact that it sits outside the even-money categories.
| Bet type | Covers | Payout | What the zero does to it |
|---|---|---|---|
| Straight-up on 0 | The single zero pocket | 35 to 1 | Wins only when the ball lands on 0 |
| Straight-up on any other number | One numbered pocket | 35 to 1 | Loses when 0 lands |
| Red or black | 18 pockets of one colour | 1 to 1 | Loses, or is held or halved under some table rules |
| Odd or even | 18 pockets | 1 to 1 | Loses, or is held or halved under some table rules |
| High or low | 18 pockets | 1 to 1 | Loses, or is held or halved under some table rules |
| Column or dozen | 12 pockets | 2 to 1 | Loses when 0 lands |
The table above covers the standard European layout. The treatment of even-money bets when zero lands is one of the few places where table rules genuinely differ, and the rule in force is normally printed on the layout itself or stated on a placard at the table. Some venues apply a rule where half the even-money stake is returned, which changes the effective edge on those bets, so it is worth reading before you sit down.
Why the zero is the house's margin, not yours
A European wheel has 37 pockets. A straight-up bet on any one number pays 35 to 1, but a fair payout for a 1-in-37 chance would be 36 to 1. The missing unit is the house edge. Over a very large number of spins, the shortfall between the true odds and the payout odds is what keeps the game profitable for the operator.
This edge is not a secret and it is not a malfunction. It is built into the payout schedule, and it applies to the zero bet in exactly the same way it applies to a bet on any other single number. The zero is not a better or worse number to bet than 17; both pay 35 to 1 against 36-to-1 true odds. What makes the zero matter to the game as a whole is that it sits outside the even-money categories, so on any spin where it lands, the house collects every even-money wager that the table rules do not protect.
The same logic explains why the wheel type matters. An American wheel has 38 pockets because it adds a double zero alongside the single zero. The straight-up payout on any number, including either zero, remains 35 to 1, but the chance of hitting it falls from 1 in 37 to 1 in 38. The extra pocket widens the gap between true odds and payout odds across the whole table, not just on zero bets.
The sequence of a round, from buy-in to the next spin
You buy chips at the table, the dealer places the ball in motion against the direction of the spinning wheel, and the betting window stays open until the dealer calls for no more bets. On a European table the layout is arranged so that the zero sits at one end of the number column, and the betting area for outside wagers runs along the side.
When the ball settles, the dealer marks the winning number, clears losing wagers first, and then pays winning bets. Straight-up winners are paid 35 to 1, split bets 17 to 1, street bets 11 to 1, corner bets 8 to 1, six-line bets 5 to 1, and even-money bets 1 to 1. The zero is paid as a straight-up winner when it is the winning number, and it is treated as a losing number for every bet that does not include it.
Settlement is where new players make most of their procedural mistakes. The common ones are touching chips after the no-more-bets call, placing a bet that straddles two betting areas without saying what it is, and reaching for winnings before the dealer has finished paying the table. On a busy table the dealer pays in a fixed order, and a hand in the layout during settlement is the fastest way to have a bet misread or voided.
How the zero bet compares with the rest of the layout
Every bet on a European wheel carries a house edge that comes from the same 37-pocket arithmetic. The edge is not identical across bet types, and the zero is the reason the even-money bets do not pay at their true odds. A straight-up bet on the zero has the same edge as a straight-up bet on any other number, but a different risk profile from a red-or-black bet because it wins far less often and pays far more when it does.
| Bet | Pockets covered | Payout | True odds on a European wheel | What the gap means |
|---|---|---|---|---|
| Straight-up (including 0) | 1 | 35 to 1 | 36 to 1 | One unit short per win, long-run |
| Split | 2 | 17 to 1 | 17.5 to 1 | Half a unit short per win, long-run |
| Street | 3 | 11 to 1 | 11.33 to 1 | A third of a unit short per win, long-run |
| Corner | 4 | 8 to 1 | 8.25 to 1 | A quarter of a unit short per win, long-run |
| Six line | 6 | 5 to 1 | 5.17 to 1 | A sixth of a unit short per win, long-run |
| Red, black, odd, even, high, low | 18 | 1 to 1 | 1.056 to 1 | The zero pocket creates the shortfall |
The table shows why the zero is not a bad bet in isolation. It is the same bet as any other straight-up number. The zero's real role is to sit outside the even-money categories and make every one of those bets pay slightly less often than a fair game would. That is the entire structural difference between a European wheel and a hypothetical wheel with no zero at all.
What changes on an American wheel
An American wheel has 38 pockets: 1 through 36, a single zero and a double zero. The straight-up payout stays at 35 to 1, so a bet on either zero pays the same as a bet on any other number, but the chance of winning falls because there is one more pocket on the wheel. The double zero also sits outside the even-money categories, so the house collects even-money wagers on two pockets instead of one.
Some American tables offer a five-number bet covering 0, 00, 1, 2 and 3, which pays 6 to 1. That bet is not available on a European layout, and it carries a larger gap between true odds and payout odds than any other standard bet on the American wheel. If the table you are at has both wheels available, the European layout is the one with fewer pockets and therefore a smaller built-in shortfall on the same bets.
Where the table's own numbers are posted
The payout schedule for every bet is normally printed on the table layout itself, and the minimum and maximum stakes are posted on a small sign at the table. If a rule about even-money bets when zero lands applies, it is stated on the layout or on that sign. The wheel type is visible the moment you look at the wheel: a single green zero means European, and a second green double zero means American.
Before you buy in, check the table minimum, the wheel type, and any printed rule about the zero and even-money bets. Those three things determine more about your expected results than any choice of which number to bet.
FAQ
Does betting on zero pay more than betting on other numbers?
No. A straight-up bet on the zero pays 35 to 1, exactly the same as a straight-up bet on any other single number. The zero's only structural difference is that it sits outside the red, black, odd, even, high and low categories, so it decides the fate of those outside bets whenever it lands.
What happens to my red or black bet when zero comes up?
That depends on the table rules in force. On many European tables the even-money bet loses outright when zero lands. Some tables apply a rule where half the stake is returned, and a smaller number hold the bet for the next spin. The rule is printed on the layout or posted at the table, and it changes the effective edge on those bets, so check it before you play.
Is the zero bet worse than an even-money bet?
Not in terms of house edge on a European wheel; a straight-up bet on zero and a red-or-black bet both carry the same built-in shortfall from the 37-pocket layout. The difference is variance. The zero bet wins rarely and pays a large multiple when it does, while an even-money bet wins close to half the time and pays one to one. Neither changes the long-run arithmetic.
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