# How to Calculate the Odds of Winning a Game of Roulette

Playing roulette is one of the oldest casino games, dating all the way back to the 16th century. While France banned the game due to its controversial nature, other countries quickly recognized its appeal and it has now been enjoyed throughout the world. It can be played by players individually, in teams, and in social settings, making it an ideal introduction to the gambling culture of Europe. If you’re planning to visit France in the near future, roulette may be the perfect way to get started.

## Odds

In roulette, the odds of winning are the chances of a given number coming up. Probability is expressed as a number between 0 and 1. Zero is impossible and 1 is absolute certainty. The odds of winning are even if the number appears on the roulette wheel at random. There are 37 or 38 numbers total in a roulette wheel. Therefore, the odds of winning are 0.50. To calculate the odds of winning a game of roulette, the player will need to calculate the probabilities of each number.

The odds of roulette also depend on the specific type of roulette and its rules. For example, European roulette has odds that favor the player more than American roulette. A split bet would have odds of two to 35. A Straight Up bet would have odds of 1/36, while a Split bet has odds of two to 35. This example is not an exact reflection of the game, but the odds are close enough. Using this example, the chances of winning a Straight Up bet on 32 red would be one in every thirty-six-six-red-black number combination.