# Roulette Calculator

Calculate the roulette values below:

P(4 Numbers)

Expected return on a \$10.00 bet

##### Probability of 4 Numbers

 Probability of 4 Numbers  = Total 4 Numbers Total Spaces

 Probability of 4 Numbers  = 4 38

 Probability of 4 Numbers  = 2 19

##### Calculate Success % of 4 Numbers

Success % = Probability of 4 Numbers x 100%

 Success %  = 2 x 100% 19

Success % = 10.53%

##### Calculate the Expected Return

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

Expected Return = \$10.00 * (0.10526315789474 - (1 - 0.10526315789474))

Expected Return = \$10.00 * (0.10526315789474 - 0.89473684210526)

Expected Return = \$10.00 * -0.78947368421053

Expected Return = \$-7.89

Expected Return = \$-7.89
##### 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.