Those are the exact probabilities: ResultĪmerican Roulette: Betting on even chances 100 times If you bet $100 on 8:1 chances in American Roulette 100 times the probability of turning a profit is 36.11%. The following tables show the probability of winning or losing a certain amount of money. Let’s take a look at what happens when you bet on even chances (red or black, odd or even, 1st or 2nd half) multiple times in a row when playing American Roulette. No 17 (or any other single number) over 500 spinsĪmerican Roulette: Long term probabilities Odds Betting on 1:1 Chances No 17 (or any other single number) over 200 spins No 17 (or any other single number) over 100 spins No 17 (or any other single number) over 26 spins

No 17 (or any other single number) over 20 spins No 17 (or any other single number) over 5 spins The following table shows the odds and probabilities of repeated occurrences of the same event in American Roulette: Thing to happen Long-term Odds and Probabilities (American Roulette) The following table shows a few of the long-term odds and probabilities for American Roulette. But if you spin the wheel 26 times, the odds of having the number 17 at least once are virtually even.

For example, it’s rather unlikely (1:37) to hit the number 17 in one spin. The probabilities of the game shift when playing multiple spins. Roulette is a game that is usually played over more than one spin of the wheel. Thus on average, you receiveįor all bets in American Roulette, you can run a similar calculation and it will show the same result – every bet has an expected return of 94.74% of the investment. If the wheel lands on any other color (black or green zero), you receive nothing. If the wheel lands on red you receive $200 (your initial bet back plus the winnings).

The probability of the wheel landing on red is (there are 18 red numbers and 38 numbers in total). This means the average return on any bet is 94.74%.Ī simple example: Say you bet $100 on red. For example, the odds of hitting a specific number, say 17, are 1:37, but the payout is only 35:1.įor all bets, the House Edge in American Roulette is 5.26%. The payouts for all bets are slightly lower than the odds.

Odds on roulette table colors