French Roulette Calculator

Category: Gambling
- May 09, 2025
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Calculate odds, expected value, and optimal betting strategies for French Roulette. French Roulette features the "La Partage" rule, where you receive half your even-money bet back when the ball lands on zero. This reduces the house edge to just 1.35% on even-money bets (red/black, odd/even, 1-18/19-36).

Bet Configuration

€

Game Rules

Wheel Configuration

Advanced Settings

€

Flat Betting: Bet the same amount on every spin. The simplest and most consistent betting system.

Understanding French Roulette

French Roulette is a casino game where players bet on where a ball will land on a spinning wheel with numbered pockets. The French version features a single zero pocket and special rules that reduce the house edge compared to other roulette variants.

Key French Roulette Rules
  • La Partage Rule: If you place an even-money bet (Red/Black, Odd/Even, 1-18/19-36) and the ball lands on zero, you receive half your bet back instead of losing it all.
  • En Prison Rule: An alternative to La Partage where your even-money bet becomes "imprisoned" when zero hits. If your bet wins on the next spin, you get your original stake back (without winnings).
  • Single Zero Wheel: The French wheel contains 37 numbers (0-36), unlike the American wheel which has an additional double zero pocket.
Roulette Betting Options
  • Even-Money Bets (1:1): Red/Black, Odd/Even, High/Low (1-18/19-36)
  • Column/Dozen Bets (2:1): Column (1st, 2nd, or 3rd), Dozen (1-12, 13-24, 25-36)
  • Six Line (6 numbers, 5:1): Bet on two adjacent rows (e.g., 1-6)
  • Corner (4 numbers, 8:1): Bet on four numbers forming a square
  • Street (3 numbers, 11:1): Bet on a horizontal line of three numbers
  • Split (2 numbers, 17:1): Bet on two adjacent numbers
  • Straight Up (1 number, 35:1): Bet on a single number
House Edge in French Roulette

French Roulette has one of the lowest house edges among casino games:

  • Even-money bets with La Partage: 1.35% house edge
  • All other bets: 2.70% house edge
  • This is significantly better than American Roulette, which has a 5.26% house edge on most bets.
Popular Betting Systems
  • Martingale: Double your bet after each loss, reset after a win. High risk of reaching table limits.
  • Fibonacci: Follow the Fibonacci sequence (1, 1, 2, 3, 5, 8...) for bet sizes after losses.
  • D'Alembert: Increase bet by one unit after a loss, decrease by one unit after a win.
  • Paroli: Double your bet after each win, reset after three consecutive wins or any loss.

While these systems can be interesting, none can overcome the inherent house edge in the long run.

Disclaimer: This calculator provides theoretical results based on mathematical probability. Actual results may vary due to the random nature of the game. Different casinos may have slightly different rules. Always gamble responsibly and only with money you can afford to lose.

What Is the French Roulette Calculator?

The French Roulette Calculator is a practical tool for analyzing the outcomes of different betting strategies in French Roulette. It helps players assess risk, simulate potential profits and losses, and understand the odds of winning various types of bets. With a user-friendly interface, it offers valuable insights using key features such as betting system simulations, odds estimation, and probability breakdowns.

Key Features

  • Odds Estimation: Instantly view your probability of winning based on bet type and wheel configuration.
  • Expected Return Calculator: Find out how much you might win or lose per bet over time.
  • Risk Assessment: Gauge the volatility of your bets with clearly labeled risk levels.
  • Betting System Simulations: Explore how systems like Martingale, Fibonacci, and Flat Betting perform over multiple spins.
  • Interactive Charts: Visualize win probabilities, bankroll changes, and betting strategy comparisons.
  • La Partage & En Prison Rules: Account for these French Roulette rules that reduce the house edge.

How to Use the Calculator

  • Select your Bet Type (e.g., Red/Black, Dozen, Straight Up).
  • Enter your Bet Amount and choose if you want La Partage or En Prison rules active.
  • Pick your Wheel Type: French/European (single zero) or American (double zero).
  • Choose a Betting System (like Martingale or Flat) and input your Starting Bankroll.
  • Set the number of spins you want to simulate and click “Calculate Results”.

How the Calculator Helps

This tool acts as a Roulette Odds Calculator and Betting Odds Tool, offering deep insights for casual players and serious gamblers alike. It helps you understand:

  • Which bets offer the best return based on house edge.
  • How various betting strategies affect your bankroll over time.
  • Whether La Partage or En Prison rules improve your outcomes.
  • How likely you are to profit—or lose—over a set number of spins.

For users interested in wagering tools, it also works as a Gambling-calculator/">Gambling Calculator offering stake evaluation, wager analysis, and a reliable odds probability tool.

Formula Used

Expected Value (EV):

\[ \text{EV} = (P_{win} \times \text{payout}) - (P_{loss} \times \text{stake}) \]

Where:

  • \( P_{win} \) = probability of winning
  • \( P_{loss} \) = probability of losing
  • stake = amount wagered

Frequently Asked Questions

  • Is this calculator only for French Roulette?
    While optimized for French Roulette, you can simulate American Roulette by selecting the appropriate wheel type.
  • What is the benefit of La Partage?
    La Partage returns half of your even-money bet if the ball lands on zero, reducing the house edge from 2.70% to 1.35%.
  • Does the calculator guarantee wins?
    No. This tool is for educational purposes and provides mathematical estimates only. Roulette outcomes are random.
  • Can I use this for Other casino games?
    This calculator is designed for roulette. For other games, you may want tools like a Blackjack Strategy Calculator or Poker Odds Calculator.

Useful For

  • Understanding roulette odds before placing real bets
  • Comparing betting systems like Martingale and Fibonacci
  • Analyzing risk vs reward for each type of roulette bet
  • Improving decision-making through probability insights and expected return calculations

Final Tips

  • Use the calculator as a betting odds guide before wagering real money.
  • Try different simulations to understand how volatility affects outcomes.
  • Stick to wheels with La Partage or En Prison to reduce losses over time.
  • Always gamble responsibly and view these tools as a way to make informed choices—not as guarantees of success.