European Roulette Calculator
Calculate probabilities and potential winnings for all types of European roulette bets (37 numbers).
Bet Configuration
Choose your bet type and stake
Single number (e.g.: 17)
Information on Selected Bet
Straight Up
Number of Numbers
1 / 37
House Edge
2.7%
Explanation
Single number (e.g.: 17). In European roulette, you have 1 chance(s) out of 37 to win, a probability of 2.7%. If you win, you receive 35 times your stake plus your initial stake.
Expected Return
The expected return is negative for all roulette bets. This means that on average, you will lose 2.7% of your stake over the long term. The calculated expected return (-0.28€) represents your average expected loss for this stake of 10€.
Comparative Betting Table
Compare all types of bets available in European roulette
| Bet Type | Numbers | Probability | Odds | Win for €10 |
|---|---|---|---|---|
| Straight Up | 1/37 | 2.7% | 35:1 | 360€ |
| Split | 2/37 | 5.41% | 17:1 | 180€ |
| Street | 3/37 | 8.11% | 11:1 | 120€ |
| Corner | 4/37 | 10.81% | 8:1 | 90€ |
| Six Line | 6/37 | 16.22% | 5:1 | 60€ |
| Dozen | 12/37 | 32.43% | 2:1 | 30€ |
| Column | 12/37 | 32.43% | 2:1 | 30€ |
| Red/Black | 18/37 | 48.65% | 1:1 | 20€ |
| Even/Odd | 18/37 | 48.65% | 1:1 | 20€ |
| Low/High | 18/37 | 48.65% | 1:1 | 20€ |
Understanding European Roulette
Why European roulette?
European roulette has 37 numbers (0 to 36), compared to 38 for American roulette (which has a double zero). This reduces the house edge from 5.26% to 2.70%, making European roulette more favorable to the player.
The house edge
The green 0 is the key to the casino's advantage. All simple bets (red/black, even/odd, etc.) lose when 0 comes up, creating a mathematical advantage of 2.70% for the casino over the long term.
Playing tips
No strategy can overcome the house edge. Systems like martingale can work in the short term but are risky. Always set a budget and play for entertainment, not to make money.