# Roulette Calculator

Calculate the roulette values below:

P(Black)

Expected return on a $10.00 bet

##### Probability of Black

Probability of Black = | Total Black |

| Total Spaces |

Probability of Black = | 18 |

| 38 |

Probability of Black = | 9 |

| 19 |

##### Calculate Success % of Black

Success % = Probability of Black x 100%

Success % = **47.37%**

##### Calculate the Expected Return

Expected Return = Bet * (Success % - (1 - Success %))

Expected Return = $10.00 * (0.47368421052632 - (1 - 0.47368421052632))

Expected Return = $10.00 * (0.47368421052632 - 0.52631578947368)

Expected Return = $10.00 * -0.052631578947369

Expected Return = **$-0.53**

##### How does the Roulette Calculator work?

Free Roulette Calculator - Calculates the probability for different bets on a roulette wheel including expected return on a monetary bet.

This calculator has 1 input.

### What 2 formulas are used for the Roulette Calculator?

Probability of color = Total Spaces of Color/Total Spaces

Expected Return on your Bet = Bet * (Success % - (1 - Success %))

For more math formulas, check out our

Formula Dossier
### What 4 concepts are covered in the Roulette Calculator?

- expected return
- amount of profit or loss an investor anticipates on an investment
- percentage
- a specified amount in or for every hundred. one part in every hundred.
- probability
- the likelihood of an event happening. This value is always between 0 and 1.

P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes - roulette
- a gambling game in which a ball is dropped onto a revolving wheel ( roulette wheel ) with numbered compartments, the players betting on the number at which the ball will come to rest.

##### Example calculations for the Roulette Calculator

## Tags:

Add This Calculator To Your Website