A Beginner’s Guide to Playing Roulette Odds


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It’s forgivable to think that online roulette is a classic, simple casino game: You place your bets, spin the wheel and if it lands on one or more of your selections then you pocket a payout and everybody goes home happy.

At face value, roulette looks like a game where the odds are stacked against casino patrons – and it is, slightly. But like any game of numbers, there are a wide range of ways to deploy a strategy and have a good chance at beating the house.

American Roulette vs European Roulette

The first thing to address are the differences between American and European Roulette. In theory, the difference is zero – that is, American Roulette has an additional cell, a double zero. In practice, this affects the house edge (the amount the casino will take on average over time), with European Roulette running an edge of 2.7% and American of 5.3%.

That means a run of bad luck is extra costly in American Roulette. Of course, if you are a lucky bettor and plan on betting on a single number, the odds are 36/1 in European Roulette and 37/1 in American Roulette. One note of caution, however, many American casinos operate American “single zero” tables, in which case the edge issue is moot.

Avoiding Zero

Whichever table type you choose, avoiding the extra zero is a good plan for beginner strategies. The Odd/Even, Red/Black and Low (1-18)/High (19-36) bets make a good starting point. The double zero can seriously chip away at regular winnings.


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The Martingale System

If you play one of these cells regularly, a common system is to double down when you lose to reduce losses. This is called the Martingale System and can be a good way to slowly increase your winnings. But remember, the house edge means that each bet comes with a 47.4% win probability and doubling your stake can end in a major loss if you don't have enough cash to last until you get a win.

Three Column Betting

The next step up in odds is on 1-12, 13-24 or 25-36; or on the three columns starting 1, 2 or 3, which pay 2/1 and have a win probability of 31.58%. Here strategists could consider hedging bets by placing equal stakes on two of the three columns (or blocks) and doubling up with every non-winning spin. It's similar to the Martingale System, but with a 63.2% chance of winning on each spin.

Bond Strategy

More devious strategies can cut risk even further. A famous example is the Bond Strategy. In this system, if you had $100, for example, you would bet $55 on the high numbers, $40 on the first third and $5 on zero for insurance: this covers 31 of 37 numbers and gives an 83.7% chance of being ahead after the spin.


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Alternative Bets

The key to any strategy is maximizing board coverage to minimize risk. Roulette is a game of chance, after all, and the odds are there to be played. Other bets to choose from are:

  • Six Line (six numbers): pays 5/1, 16.2% win chance
  • Corner (four numbers): pays 8/1, 10.8% win chance
  • Street (three numbers): pays 11/1, 8.1% win chance
  • Split (two numbers): pays 17/1, 5.4% win chance
  • American Roulette also offers bets on the first five numbers (00, 0, 1, 2, 3) at 6/1 with a 13.2% win chance.

So use the numbers to build your own strategy then give it a spin. But bet with your head, not your heart. Do not get sucked into the gamblers’ fallacy that a number is “due” or “lucky.” Each spin is independent from the last and so the odds are the same every time.

Looking to put this information into action? You can play a free demo mode or sign up at an online casino by entering your state below.

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Every online gambler deserves a safe and fair place to play. Our mission at Gambling.com is to create a safe online environment for players through free, impartial and independent reviews of the best online gambling companies in the US so that you can play with confidence and security. All ratings and reviews are made independently of the operator by our team of gaming experts and with every company being fully licensed to operate in the US they can be trusted to offer fair play. We accept compensation from the companies advertised on this page and this may affect the brand positioning. We endeavour to continuously update this list so we can bring you the most current sites and the best available offers but we cannot review every site in the market.

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