Before You Sit Down: The Wheel Is the Whole Game
A roulette table looks busy, but every bet you can make is just a prediction about where a small ball will land on a spinning wheel. The wheel has numbered pockets, and the table layout next to it lets you place chips on numbers, groups of numbers, colours, or ranges. Your job is simple: put chips somewhere, watch the spin, and see whether the ball lands in a pocket you covered.
The first thing to check is which wheel you are playing. A European wheel has 37 pockets, numbered 0 to 36, with a single green zero. An American wheel has 38 pockets, adding a double zero alongside the single zero. That extra pocket matters more than anything else on the table, because it changes the odds on every bet you make. Before you buy in, glance at the wheel or the layout: if you see both a 0 and a 00, you are on an American wheel.
The zero pockets are not red or black. They are green, and they sit outside the red/black and odd/even bets. When the ball lands in a zero, most outside bets lose. That is the house's built-in advantage, and it is slightly larger on the American wheel because there is one more green pocket on it.
Buying In and Placing a Bet
You cannot hand cash to the dealer. At a live table, you place your money on the felt, and the dealer exchanges it for roulette chips. These chips are not the standard casino chips used at other games; they are colour-specific to you, so the dealer can tell your bets apart from everyone else's. At an online table, you select a chip value from the on-screen bank and click the layout to place it.
Each table has a minimum and maximum bet, posted on a small sign or shown on screen. The minimum usually applies to each individual bet, not to the total spread across the table, but the exact rule varies by venue and by whether you are betting inside, outside, or both. If you are unsure, ask the dealer or check the game's help panel before the spin starts.
Once the dealer announces that no more bets are allowed, the layout is locked. On a physical table, that is the moment the ball is released or the dealer sweeps a hand over the felt. Online, the button changes state. Anything you try to place after that point does not count, and moving chips after the call is the fastest way to get a warning from the dealer.
The Sequence of a Round
A roulette round moves through the same steps every time, and knowing them removes most of the confusion new players feel. First, the previous round is settled: winning bets are paid, losing chips are cleared from the layout. Then the betting window opens, and you place your chips. The dealer spins the wheel in one direction and sends the ball travelling the other way. As the ball slows, the dealer calls no more bets. The ball drops into a pocket, the dealer places a marker on the winning number, and losing bets are swept away before winning bets are paid. Then the next round begins.
You are not committed to the same bet each round. You can change your chips, move them to different numbers, or sit out a spin entirely. Nothing about roulette requires you to bet every round, and there is no pattern of past results that tells you where the next ball will land. Each spin is an independent event, run by a random number generator online or by pure physics at a live table.
Inside Bets: Numbers and Small Groups
Inside bets are placed on the numbered grid itself. They cover individual numbers or small clusters of numbers, and they pay more when they win because they are less likely to hit. The layout gives you several ways to cover a small group with a single chip.
| Bet name | What it covers | How it is placed |
|---|---|---|
| Straight up | A single number | Chip placed fully inside one number square |
| Split | Two adjacent numbers | Chip placed on the line between them |
| Street | Three numbers in a row | Chip placed on the outer edge of that row |
| Corner | Four numbers meeting at a corner | Chip placed on the intersection of four squares |
| Six line | Six numbers across two rows | Chip placed on the outer corner where two rows meet |
The payout for each inside bet reflects how many numbers it covers. A straight-up bet on one number pays more than a split, which pays more than a street, and so on. The exact payout ratios are printed on the table layout or shown in the game's paytable, and they differ slightly between European and American wheels because the number of pockets differs.
Outside Bets: Colours, Ranges and Columns
Outside bets sit around the numbered grid and cover larger groups. They win more often than inside bets, so they pay less. The standard outside bets are red or black, odd or even, low (1 to 18) or high (19 to 36), dozens, and columns.
Red/black, odd/even, and low/high each cover 18 numbers. A dozen covers 12 numbers, and a column covers the 12 numbers running vertically down the layout. None of these bets include the zero pockets, which is precisely why the house keeps an edge on them. When the ball lands in zero, an 18-number outside bet loses, even though the player covered nearly half the wheel.
Outside bets are where most new players start, because the decisions feel simpler and the wins come more often. The trade-off is that the payout is smaller, and the zero pocket means the bet is not a true 50/50 proposition even when it looks like one.
How the Edge Differs by Wheel and by Bet
Every bet on a roulette table carries a house edge, and that edge is not the same across all bets or all wheels. The wheel type sets the baseline. A European wheel has one zero among 37 pockets; an American wheel has two zeros among 38. The extra pocket on the American layout increases the house edge on nearly every bet, because the payout ratios stay the same while the chance of a zero landing goes up.
Bet type matters too. On a European wheel, a straight-up bet on a single number and an outside bet on red do not carry identical edges under every rule set. Some tables apply a rule that returns part of a losing even-money bet when the ball lands in zero, which changes the edge on those outside bets specifically. That rule is not universal, and it is printed in the table rules where it applies.
| Wheel or bet | What changes | What stays the same |
|---|---|---|
| European wheel (single zero) | 37 pockets; lower house edge than American | Payout ratios for each bet type |
| American wheel (double zero) | 38 pockets; higher house edge on most bets | Payout ratios for each bet type |
| Even-money outside bets | May be affected by a zero-return rule at some tables | Cover 18 numbers, excluding zero pockets |
| Inside bets | Higher payouts, lower hit frequency | House edge set by wheel type and payout ratio |
No betting pattern changes the built-in edge. Doubling your bet after a loss, covering more numbers, or switching between red and black does not alter the mathematics of the wheel. What you control is which bet you place, how much you stake, and how long you stay at the table. Those choices change the pace and the size of your expected loss, not the direction of it.
Procedural Mistakes That Slow You Down
The first mistake new players make is placing chips after the no-more-bets call. The dealer will stop you, and if it happens repeatedly, the pit staff may take it as more than clumsiness. Watch the ball and listen for the call; put your chips down early, and adjust them while the betting window is open.
The second is mixing up chip values. At a live table, your roulette chips have no printed denomination, and the dealer assigns each colour a value when you buy in. If you do not know what your colour is worth, ask before you bet. Stacking chips of different values on the same spot also slows payouts, because the dealer has to separate them before settling the round.
The third is reaching across the table to place a bet or collect a win. On a physical table, the dealer moves chips for you, and your hands should not cross the layout while a round is in progress. Online, the equivalent mistake is clicking a bet you did not mean to place and only noticing after the spin has started. Most online tables let you clear or adjust bets up to the moment the round locks, so confirm your layout before you press spin.
What Strategy Charts Can and Cannot Do
Roulette does not have a basic-strategy chart in the way blackjack does, because there is no decision after the bet that changes the outcome. Your only decision is where to put chips before the spin. Some betting systems claim to tell you how much to wager after each result, but those systems change the pattern of wins and losses across a session, not the house edge underneath them.
If you do see a published strategy guide for roulette, check which wheel and which rule set it assumes. A chart built for a European single-zero wheel with a zero-return rule does not transfer cleanly to an American double-zero table without that rule. The table rules in front of you are the only version that matters.
FAQ
What is the simplest roulette bet for a beginner?
An outside bet such as red or black is the easiest to follow, because it covers 18 numbers and pays even money. It is not a true 50/50 bet, since the zero pockets sit outside it, but it gives you a clear win-or-lose result without needing to track individual numbers.
Can I bet on both red and black to avoid losing?
Covering both colours on the same spin does not remove the risk. You are staking two bets to cover 36 of the 37 or 38 pockets, and when the ball lands in a zero, both bets lose. The payout on the winning side only returns your stake on that side, so the combined position still loses money over time.
Does the previous spin affect the next one?
No. Each spin is independent, whether the wheel is physical or driven by a random number generator. A number that has appeared five times in a row has the same chance of appearing on the next spin as any other number on that wheel. The wheel has no memory, and no display of past results changes the odds.
Gamble responsibly. If you or someone you know has a gambling problem, call the helpline printed in the footer below. Must be 18+ or 21+ depending on where you are. Follow the minimum age that applies to you.
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.