The bet that covers a third of the wheel
A column bet is one of the quickest ways to put chips on twelve numbers at once. Instead of placing a chip on any single number, you set it in the empty box at the bottom of one of the three vertical columns printed on the layout. That chip now covers every number in that column, from the top of the table down to the bottom.
The three columns split the numbers 1 through 36 into groups of twelve. The first column runs 1, 4, 7, 10 and so on up to 34. The second runs 2, 5, 8 and so on to 35. The third runs 3, 6, 9 and so on to 36. A zero or double zero sits outside all three columns, which matters more than most new players expect.
What makes the bet worth understanding is the gap between what it pays and what it covers. A winning column bet pays 2 to 1. If you wager 10 units and any of your twelve numbers lands, you keep the original stake and receive 20 units in winnings. That sounds generous until you count the pockets that are not in your column.
Where the chips go and when the bet settles
You buy in at the cage or at the table, and the dealer exchanges your cash for roulette chips. Roulette chips carry no printed denomination in most venues; their value is set by the table and marked with a lammer, the small disc placed on top of your stack. Keep that in mind when you push chips onto the layout, because a column bet requires a stack placed in one precise spot.
The betting area for a column is the rectangular box directly beneath the bottom number of that column. It is often labelled "2 to 1" because of the payout. You place the chip or stack there yourself while the table is open for bets. Once the dealer calls no more bets, the wheel is spun and the ball is released in the opposite direction. When the ball settles, the dealer marks the winning number, clears losing bets, and pays winners in order.
One procedural point catches new players: a chip that straddles the line between the column box and the number above it may be read as a different bet altogether. Place the stack fully inside the box. If you cannot reach, hand the chips to the dealer and say which column you want. The dealer places the bet for you.
Column bets on European and American wheels
The wheel you sit at changes the arithmetic of every bet on the table, and the column bet is no exception. The bet wins on twelve numbers either way. What changes is how many numbers lose.
| Wheel type | Pockets | Winning numbers for one column | Losing numbers for one column | Payout |
|---|---|---|---|---|
| European (single zero) | 37 | 12 | 25 | 2 to 1 |
| American (double zero) | 38 | 12 | 26 | 2 to 1 |
On a European wheel, a column bet wins on 12 pockets and loses on 25. On an American wheel, it wins on 12 and loses on 26. The extra zero pocket is a losing number for every column, every spin. That is the whole difference, and it is why the same bet costs more per unit wagered on an American layout.
The payout does not change to compensate. A 2 to 1 payout on a bet that covers roughly a third of the wheel leaves a built-in gap between what the bet pays and what the true odds would be. That gap is the house edge, and it is larger on the American wheel because the zero pockets add losing outcomes without adding any winning ones.
Column bets against other outside bets
Outside bets are the wagers placed around the numbered grid rather than on it. The column bet belongs to that family. It sits alongside red or black, odd or even, high or low, and the dozens. The difference is in coverage and payout.
| Bet | Numbers covered | Payout | What changes the edge |
|---|---|---|---|
| Column | 12 | 2 to 1 | Wheel type only |
| Dozen | 12 | 2 to 1 | Wheel type only |
| Red or black | 18 | 1 to 1 | Wheel type only |
| Odd or even | 18 | 1 to 1 | Wheel type only |
| High or low | 18 | 1 to 1 | Wheel type only |
The column and the dozen are structurally identical: twelve numbers, 2 to 1 payout, same edge on the same wheel. The only difference is which twelve numbers. A dozen covers a consecutive block, like 1 through 12. A column covers every third number. No column and no dozen is more likely to hit than any other; the wheel does not remember what it just did.
The even-money bets cover eighteen numbers and pay 1 to 1. They lose less often per spin than a column bet, but they pay less when they win. Over a very large number of spins, the expected loss per unit wagered is the same for all of these outside bets on the same wheel. What differs is the rhythm: a column bet pays in bigger bursts with longer dry spells between them.
What a column bet cannot do
No placement of chips changes the fact that the wheel has more losing pockets than winning ones for this bet. A column bet does not become stronger after a losing streak, and a column that has not hit for several spins is not due. Each spin is an independent event under the random number generator or the physical wheel in front of you.
The betting pattern people sometimes reach for, doubling the stake after a loss, does not alter the edge. It changes the size of the swings. A run of losses grows the required stake quickly, and the table maximum eventually stops the progression. The house edge on the column bet stays exactly where it was on the first spin.
That does not make the bet a bad choice in any moral sense. It is one of the lower-edged wagers on the layout compared with the single-number bets, and it gives a player twelve numbers with one placement. The honest way to hold it in your head is this: you are buying a larger chance of a smaller win, at a cost that is fixed by the wheel type.
Reading the table before you sit down
Everything that determines what a column bet costs you is printed on the layout or posted at the table. The wheel type is visible at a glance: a single zero at the top of the layout means a European wheel, and a zero plus a double zero means an American one. The table minimum and maximum are posted on a placard at the table, and they apply to each outside bet placement, not to the sum of all your chips.
If the table uses a rule variant that returns half the stake on even-money bets when a zero lands, that variant does not apply to column bets. The column is a 2 to 1 bet and loses in full on a zero. The rule is sometimes called la partage or en prison, and it only touches red, black, odd, even, high and low. A column bet on a wheel with such a rule still loses to the zero like any other number outside its twelve.
When you want the exact expected loss for the table you are at, the arithmetic is simple enough to do from the wheel type. On a European wheel, one column wins on 12 of 37 pockets and pays 2 to 1; on an American wheel, it wins on 12 of 38. The gap between that win rate and the payout is the edge. You do not need a published percentage to see that the American layout is the more expensive place to make the same bet.
FAQ
What is the difference between a column bet and a dozen bet?
Both cover twelve numbers and both pay 2 to 1. A dozen bet covers a consecutive block of numbers, such as 1 through 12, while a column bet covers every third number down the layout. The house edge is identical on the same wheel; only the arrangement of the numbers differs.
Can I combine a column bet with other bets on the same spin?
Yes. You can place a column bet alongside red, black, a straight-up number, or any other wager the table allows. Each bet settles independently. A chip on a column and a chip on a single number inside that column can both win on the same spin, but each carries its own payout and its own edge.
Do the zero pockets ever count for a column bet?
No. The zero and double zero sit outside all three columns and count as losing numbers for every column bet. On a European wheel the single zero is one losing pocket; on an American wheel the zero and double zero are two. This is why the same column bet has a larger house edge on an American layout.
Play responsibly. If you or someone you know is struggling with gambling, contact the helpline printed in the footer below or a local support service. Gambling should never be used as a way to recover losses or solve financial problems. Set limits before you play and stick to them.
Play responsibly
Gambling should be treated as paid entertainment, never as a way to earn income or recover losses. 1-800-MY-RESET (1-800-697-3738)
18+ or 21+ depending on where you are; follow the minimum age that applies to you.
This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.