Roulette Calculator

Enter your bet amount:


                  

Calculate the roulette values below:

P(Odds)

Expected return on a $10.00 bet

Probability of Odds

Probability of Odds  =  Total Odds
  Total Spaces

Probability of Odds  =  18
  38

Probability of Odds  =  9
  19

Calculate Success % of Odds

Success % = Probability of Odds x 100%

Success %  =  9 x 100%
  19

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





What is the Answer?
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

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