You are buying a number, a group, or a colour
Every chip you place on a roulette layout is a claim on where the ball will stop. The table does not care how much you stake or how confident you feel; it only reads which pockets your chips cover. A single number pays more than a colour because it is rarer, and the payout is always slightly short of the true odds. That shortfall is the house edge, and it is built into the felt before the wheel spins.
Roulette bets split into three families. Inside bets sit on the numbered grid and cover one number or a small cluster of them. Outside bets sit around the grid and cover broad categories such as red, black, odd, even, high or low. Called bets, mostly found on French and some European layouts, cover fixed sections of the wheel itself rather than positions on the grid. Each family behaves differently, and the edge can change between them.
The wheel decides the true odds
Before comparing bets, you need to know which wheel you are playing. A European wheel has 37 pockets: the numbers 0 through 36, with a single zero. An American wheel has 38 pockets because it adds a double zero alongside the single zero. The extra pocket changes every payout calculation on the table.
A straight-up bet on one number pays 35 to 1. On a European wheel, the true odds against that number are 36 to 1, because there are 37 pockets and only one of them wins. On an American wheel, the true odds are 37 to 1. The payout stays 35 to 1 either way, which is why the American layout carries a larger house edge on the same bet. The zero pockets are not neutral; they are losing pockets for almost every outside bet and most inside bets, and they are where the operator's advantage lives.
Inside bets: fewer numbers, larger payouts
Inside bets are placed directly on the numbered area of the layout. They cover between one and six numbers, and the payout rises as the coverage shrinks. The names describe the shape your chips make on the felt.
| Bet | Numbers covered | Payout | How it sits on the layout |
|---|---|---|---|
| Straight up | 1 | 35 to 1 | Chip placed fully inside one number's square |
| Split | 2 | 17 to 1 | Chip on the line between two adjacent numbers |
| Street | 3 | 11 to 1 | Chip on the outer edge of a row of three numbers |
| Corner | 4 | 8 to 1 | Chip on the intersection of four numbers |
| Six line | 6 | 5 to 1 | Chip on the edge covering two adjacent rows |
Some American layouts also offer a five-number bet covering 0, 00, 1, 2 and 3. It pays 6 to 1, but it carries a larger house edge than any other bet on that wheel because the payout does not match the true odds as closely as the other wagers do. If you are looking for the worst standard bet on an American table, that is usually it.
Outside bets: more numbers, steadier rhythm
Outside bets sit in the boxes around the numbered grid. They cover twelve numbers or more, which means they hit more often and pay less. They are the bets most players use when they want a session to last longer rather than swing sharply.
| Bet | Numbers covered | Payout | What you are claiming |
|---|---|---|---|
| Red or black | 18 | 1 to 1 | The ball lands on that colour |
| Odd or even | 18 | 1 to 1 | The winning number is odd or even |
| High or low | 18 | 1 to 1 | The number is 1-18 or 19-36 |
| Dozen | 12 | 2 to 1 | The number falls in the first, second or third dozen |
| Column | 12 | 2 to 1 | The number sits in one of the three vertical columns |
The zero matters here more than anywhere else. On a European wheel, red, black, odd, even, high and low each cover 18 of the 37 pockets. The single zero is the pocket that makes all of them lose. On an American wheel, both zero pockets work against those bets. That is why the same outside bet carries a different edge depending on the wheel, even though the payout is identical.
Called bets: sections of the wheel, not the grid
Called bets, sometimes called French bets or announced bets, are placed by naming them to the dealer rather than by positioning chips yourself. They cover fixed sections of the wheel, and they are far more common on European and French layouts than on American ones. The names refer to wheel geography, not to the printed grid.
The most common are Voisins du Zero, which covers the neighbours of zero; Tiers du Cylindre, which covers roughly the opposite third of the wheel; and Orphelins, which covers the two small sections left over. Each is a bundle of straight-up and split bets, and the dealer places the chips in the correct positions after you announce the wager. The table rules and the posted minimums determine how much you must stake to use one, because the total is divided across several positions.
How a round moves from chips to settlement
You buy in at the table with cash or a casino voucher, and the dealer converts it into roulette chips. These are usually distinct in colour from the chips used at other tables, and they have no value printed on them. The dealer assigns the value, and that value matters only at that table, which is why you must cash roulette chips back at the same table before you leave.
Once the dealer opens betting, players place chips on the layout. When the dealer calls an end to betting, the wheel is already spinning and the ball is travelling against its direction. No bets may be placed or moved after that point. The ball drops into a pocket, the dealer marks the winning number, losing bets are cleared first, and winning bets are paid according to the posted payouts. Only after all losing chips are removed may you reach for a winning chip.
The sequence is strict for a reason. A hand that moves toward the layout while the dealer is clearing losing bets looks like an attempt to alter a wager, and venues treat that with zero patience. Wait for the dealer to finish paying, then collect or leave your winning chips for the next spin if you intend to press them.
What changes the edge on the same bet
Two players can make the same wager and face different house edges because of two things: the wheel and the rule set. The wheel is the larger factor. A straight-up bet on a European wheel faces a smaller edge than the same bet on an American wheel, because the American wheel adds a pocket without changing the payout.
The rule set matters mainly for even-money outside bets. Some European and French tables apply la partage or en prison when the ball lands on zero. Under la partage, half of an even-money losing bet is returned. Under en prison, the bet is held for the next spin rather than collected immediately. Both rules reduce the edge on red, black, odd, even, high and low bets, but they do not change the edge on inside bets. The table's posted rules state which version applies, and you should read them before assuming the more favourable one is in force.
No betting pattern changes the built-in edge of the game. Covering more numbers changes how often you win and how much you lose when you do not; it does not remove the shortfall between the payout and the true odds. A bet on red and a bet on black in the same spin simply recreates a near-even-money position with the zero as the losing pocket, and it is a slower way to give up the same edge.
Procedural mistakes that cost new players
The first mistake is treating roulette chips as cash. They are table-specific instruments. If you stand up with them and walk to the cage, the cage will send you back to the table, and if the table has closed, you may have a problem. Cash them at the table before you leave it.
The second is touching chips after the dealer calls no more bets. The call is not a suggestion. A late hand near the layout can void a spin or get you removed, and it will not be read as an innocent reach. Decide your wager before the call and leave it alone after it.
The third is assuming every wheel is the same. A player who learns the payouts on a European wheel and then sits at an American one is giving up more edge on every spin without realising it. Check the wheel before you buy in, and if the table offers la partage or en prison, know whether the rule applies to your bet.
FAQ
Which roulette bet has the best odds?
The even-money outside bets such as red, black, odd, even, high and low carry the smallest house edge on the same wheel, because they cover the most pockets relative to their payout. On a table with la partage or en prison, the edge on those bets is reduced further. The best bet for you still depends on what you want from the session, because lower-edge bets also pay the least.
Is betting on red and black at the same time a safe strategy?
It is not a strategy that removes the edge. On a European wheel, red and black together cover 36 of the 37 pockets, so most spins return one bet and lose the other, leaving you flat. The single zero is the pocket where both bets lose, and that is exactly where the operator's advantage sits. The same structure applies with an American wheel and both zero pockets.
What is the difference between a street bet and a six line?
A street covers three consecutive numbers in a single row and pays 11 to 1. A six line covers two adjacent rows, six numbers in total, and pays 5 to 1. The six line wins more often because it covers twice as many pockets, but it pays less than half as much, which is how the house edge stays consistent across the two wagers.
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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.