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Roulette probabilities
Below are some Roulette probabilities with an attempt to explain the numbers and likelihood of landing on a given number, or a cluster of numbers. It is very simple to calculate the probabilities. It's important to understand the odds you face when making any decision when gambling. By memorising this table you can become a smarter and more accomplished player.
The American wheel has 36 regular numbers, a zero, and a double-zero. Hence, you have 38 possible spaces on which the ball may land. So when you are betting on a single number, you have a possible 1/38 chance of winning. As a possibility you might win 1 out of every 38 spins, but this is where theory and reality meets. It is not to say that this 1 out of 38 spins will be in an exact winnig sequence, as the factor of probabilities are being activated with each spin. It can also be favourable for the player more than once during a 38 - spin – sequence.
Have a look at the probabilities for every possible outcome illustrated in the table below.
| Bets | Payout Odds | Probability |
| Red | 1 to 1 | 46.37% |
| Black | 1 to 1 | 46.37% |
| Even | 1 to 1 | 46.37% |
| Odd | 1 to 1 | 46.37% |
| 1 to 18 | 1 to 1 | 46.37% |
| 19 to 36 | 1 to 1 | 46.37% |
| 1 to 12 | 2 to 1 | 31.58% |
| 13 to 24 | 2 to 1 | 31.58% |
| 25 to 36 | 2 to 1 | 31.58% |
| Any one number | 35 to 1 | 2.63% |
| Two number combo | 17 to 1 | 5.26% |
| Three number combo | 11 to 1 | 7.89% |
| Four number combo | 8 to 1 | 10.53% |
| Six number combo | 5 to 1 | 15.79% |
| 0, 00, 1, 2, 3 combo | 6 to 1 | 13.16% |
As you can see the payout for a single number is only 35 to 1. As I stated before, you will need to spin the wheel 38 times in the long run to be ensured a win. This is where the house gets its edge. 2/38 spins will go to the casino, which converts to a 5.26% house edge. Remember, these are the probabilities based on a theoretical outcome with a definite sequence.
These are the odds for the American Roulette table. The European table does not have the double-zero, so it is much more advantageous to the player. When given the choice, you should always opt for the European table. More tips like this can be found in our Roulette Strategy section.
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