What Are the Odds in Roulette?

What Are the Odds in Roulette?

The odds in roulette refer to the probability of hitting a certain outcome and a player’s chances of winning in the long run. In this article, we will answer every question related to this by covering and comparing the odds in the three classic roulette games; American, European and French.

Comparison Chart Over Roulette Table Odds

Generally speaking, there are ten ways to place a bet to get a payout in roulette. With the below chart, we have compared what the odds are of winning each of these bets in the European, French and American versions of roulette.

Bet TypeOdds (European)Odds (French)Odds (American)
Double Street16.21%16.21%15.79%

How Are the Roulette Odds Calculated?

The odds of roulette are calculated by dividing the number of positions that will earn you a payout by the total number of positions available on the roulette wheel. 

For instance, in European and French Roulette there are 37 numbers on the roulette wheel and a bet on the column would cover 12 of these. Thus, by dividing 12 by 37 we get a 32.40% probability of winning.

In American roulette, the odds are lower because there are 38 numbers in total instead of 37. The game has an extra zero. Thus, by dividing 12 by 38 we get a 31.58% probability of winning.

What Are the Odds of Winning Roulette at a Casino?

Although roulette is considered to be one of the highest paying casino games, a player’s long-term odds of winning in roulette are zero. In the short run, you can always win, but the longer you play, the more likely you are to end up with a loss. This is because of the casino’s house edge which is as follows:

Roulette VariationHouse EdgeRTP

If you bet $100 in European roulette, you are expected to lose $2.70 because of the house edge of 2.70%. In American roulette, you would be expected to lose $5.26. 

RTP is the reversed house edge. In other words, betting $100 in European roulette with an RTP of 97.30% means that you would be expected to win a total of $97.30.

French Roulette Has the Best Betting Odds for Winning

While American roulette has an extra zero that improves the house edge, a European and French roulette table is identical. Still, French roulette has the best odds of winning. 

But only if you place even-money bets, such as red and black color. 

This is because such bets come with a special rule in French roulette. If the ball ends up on the green zero, half of your stake would be repaid to you. This does not happen in other roulette variations. 

How Can the Odds in Roulette be Improved?

There are four more or less effective ways of improving your odds in roulette:

Except for bonuses, none of these can change the long-term odds of winning in roulette. This will always be zero because of the house edge / RTP which cannot be changed. However, they will affect your short-term chances. 

Playing French Roulette

As mentioned above, French roulette is played with a special rule that offers players a higher RTP than European and American roulette. Thus, the odds of winning are increased.

Placing low-risk bets

The chances of winning from even-money bets are higher than other bets in roulette. For instance, the odds for color in roulette are 48.64% in the European version, while they are 2.70% for a single number.

Short-term, placing low-risk bets increases your odds of winning. However, the longer you play, the more likely you are to end up with a loss.  

Applying Martingale

Martingale is a popular strategy that can improve your short-term roulette odds by a lot.

For instance, if you have a bankroll of $500 and decide to bet $1 every game round using Martingale, your chances of making a profit over 30 game rounds is 92.50%.

However, the more game rounds you play, the lower the odds will become. After 100 game rounds, the odds of a profit will be 75% and after 300 game rounds 25%.

This is because you eventually lose your entire bankroll with Martingale. While the risk of this is low, the odds of it happening increase the more you play.

A bankroll of $500 can withstand 9 losses in a row and the odds of losing 9 times in a row are 0.25%. 

Using bonuses

This is the only certain way to improve your odds of winning in roulette. This method works because casino bonuses are not integrated into the roulette game, but are an external factor that improves your odds.

The way it works is simple. By receiving extra money from the casino, the probability of making a profit is automatically increased. Not only in roulette but in any game.  

This is because the amount you’re expected to lose will remain the same, but the amount you actually start with will be increased. You could see the bonus as an extra payout. 

What Are the Odds of Getting Green Zero on Roulette?

The odds of getting the green zero in roulette are 2.70% in the European and French versions. 

In American roulette, the odds are 2.63% if we only account for one of the game’s zeroes and 5.26% if we consider the probability of both. As mentioned earlier, American roulette has two green zeros instead of just one.

Note that the odds of hitting a zero are the same as the odds of hitting any roulette number. 

How the Zero on a Roulette Wheel Affect Odds

In every traditional roulette game, the zero or zeroes is what gives the casino an edge. If there was no zero, players would have a 100% RTP on all of their bets, effectively not losing and not winning any money in the long run. 

In European roulette, the odds of winning are 97.30% due to the zero. In American roulette, the odds are reduced because of an additional zero being added to the game. The RTP is only 94.70%.

On the other hand, in French roulette, the odds of winning are improved compared to the other versions. As mentioned before, this is because half of the stake is repaid when you place an even-money bet and the ball lands on zero.

What Are the Odds of Getting 9 Black in a Row in Roulette?

The odds of getting 9 black in a row in roulette are 0.15% for European and French roulette, and 0.12% for the American version. This translates to 1 in 667 game rounds and 1 in 833 respectively. 

To calculate the odds for this, you have to exponentiate what the decimal odds are for hitting black once by nine. In European roulette, the decimal odds for hitting black are 0.4864. Thus, 0.4864 by the power of 9 becomes 0.0015 or 0.15%.

Here’s a full table showing what the odds are for hitting black in roulette in 1 – 9 game rounds:

Blacks in a RowOdds (European)Odds (French)Odds (American)

The odds are lower in American roulette because of the game’s extra zero.

Here's a table showing the same odds showcased as game rounds instead:

Blacks in a RowGame round odds EuropeanGame round odds FrenchGame round odds American
11 in 21 in 21 in 2.1
21 in 4.21 in 4.21 in 4.5
31 in 8.71 in 8.71 in 9.4
41 in 17.91 in 17.91 in 19.9
51 in 36.81 in 36.81 in 42
61 in 75.21 in 75.21 in 88.5
71 in 156.21 in 156.21 in 188.7
81 in 322.61 in 322.61 in 400
91 in 666.71 in 666.71 in 833.3

Despite the low odds, history tells us that the same color has been hit 32 times in a row. This is said to have happened at a land-based casino in America in 1943. The probability of this occurring is a mind-blowing 1 in 24 billion game rounds. 

Are the Odds for Red and Black the Same?

Yes. Many roulette players are superstitious and sometimes believe that one roulette color has better odds than the other. This is especially true when the same color has appeared many times in a row. Players then assume that the other color is more likely to hit and yield a payout.

However, the odds for Red and Black are always the same in every game round no matter how many times in a row one of them has appeared. The odds are 48.64% in European and French roulette and 47.37% in American roulette. 

What Are the Odds of Hitting the Same Number Three Times in Roulette?

The odds of the same number appearing on the roulette wheel three times in a row are 0.0019% for European and French roulette and 0.0018% for American roulette. This translates to 1 in 50,653 game rounds and 1 in 54,872 respectively.

To calculate the odds, you have to exponentiate what the decimal odds are for hitting a roulette number once by three. In European roulette, the decimal odds for hitting a number are 0.027. Thus, 0.027 by the power of 3 becomes 0.000019 or 0.0019%. Put in a box?

Here’s a table showing what the odds for hitting the same number in roulette are in 1 – 5 game rounds:

Same No. in a RowOdds (European)Odds (French)Odds (American)

What Number Has the Best Odds in Roulette?

There is no number that has better odds in roulette than any other. They are all the same. 

In European and French roulette, the odds of any number are 2.70%. In American roulette, the odds are 2.63%. It doesn’t matter if you bet on 0, 4, 6, 10, 15, 20, 32, etc. 

The only way a number could have better odds than another is if it appeared more times on the roulette wheel. This is not the case in any roulette variation. 

What Has Better Odds – Roulette or Blackjack?

Blackjack offers better odds than roulette. 

Placing only one bet, the best odds of winning in each game is as follows:

  • Blackjack: 42.22%
  • Roulette: 48.64%

However, in Blackjack, you will also tie many times and not lose any money.

Thus, if we look at the odds of losing instead, they are as follows:

  • Blackjack: 49.10%
  • Roulette: 51.36%

Because of this, the RTP (odds of winning in the long run) are much better in Blackjack:

  • Blackjack RTP: 99.60%
  • Roulette RTP: 97.30%

However, the odds in Blackjack are affected by how you play the game as good or bad decisions can be made, whereas the odds in Roulette cannot be changed. For maximum payouts in Blackjack, you have to play the game perfectly. 

Are the Odds Different in Lightning Roulette?

Lightning roulette is one of many modern roulette variations that can be played at fast paying online casinos. The payouts in this game are different from that of European, French and American roulette. You can win up to 500 times the amount you bet as opposed to 36 times. 

However, the odds in Lightning roulette are the exact same as that of European roulette. There is no difference in the odds of hitting a certain number or the odds of winning in the long run.

Bringing extensive expertise in the professional iGaming industry and a deep understanding of online casino gambling, Mattias Fröbrant is a highly regarded iGaming journalist. With experience working with industry giants like Betsson Group and a track record of compiling thousands of casino articles, including hundreds of casino reviews, Mattias has established himself as a trusted authority.


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