French roulette is usually single-zero roulette with French-style layout language and player-friendlier zero rules on even-money bets. The key rules are La Partage and En Prison. Standard single-zero roulette has a 2.70% house edge, but protected even-money bets under these French rules can have an effective edge of about 1.35%.
Quick Facts
- French roulette uses a single-zero wheel with 37 pockets.
- Even-money bets are red/black, odd/even, and high/low.
- La Partage returns half of an even-money bet when zero lands.
- En Prison can lock an even-money bet for the next spin after zero.
- The lower 1.35% edge usually applies only to protected even-money bets.
- Inside bets, dozens, columns, and call bets usually remain at the standard single-zero edge.
- French roulette often uses racetrack betting and call bets such as Voisins du Zéro.
Plain Talk
French roulette is not magic roulette. It is better-rule roulette.
The wheel normally has one zero, like European roulette. The difference is that some French tables soften what happens when zero lands against even-money bets. Instead of always taking the full bet, the table may return half through La Partage or hold the bet for another spin through En Prison.
That does not make roulette positive expectation. It does make those protected even-money bets cheaper than standard roulette.
The Wizard of Odds roulette rules describe French roulette as single-zero roulette with favorable en prison or half-back rules. Nevada also publishes live single-zero roulette rules of play, and equipment/rule definitions from regulators such as Massachusetts 205 CMR roulette wheel and table rules show how wheel type and layout are formal compliance items, not casual decorations.
How It Works
French roulette has three layers:
| Layer | What it means | Player effect |
|---|---|---|
| Single-zero wheel | One 0, no 00 | Standard edge is 2.70% instead of 5.26% |
| French zero rules | La Partage or En Prison on even-money bets | Can reduce effective edge to about 1.35% |
| French-style betting | Call bets and racetrack sectors | More wheel-section betting options, not automatically better odds |
The zero rules are the key. A table can have a single-zero wheel without offering La Partage or En Prison. That is European roulette, not necessarily French roulette in the meaningful player-value sense.
Always check the rules on the table sign, screen, help menu, or game rules panel.
French roulette terms may include:
| French term | Plain English meaning |
|---|---|
| La Partage | Half the even-money stake is returned on zero |
| En Prison | Even-money stake is locked after zero and resolved on a later spin |
| Voisins du Zéro | “Neighbors of zero,” a wheel-sector call bet |
| Tiers du Cylindre | “Thirds of the wheel,” another sector call bet |
| Orphelins | “Orphans,” numbers not in the main two sector groups |
| Rien ne va plus | “No more bets” |
Scope guard: this page explains French roulette rules as a game format. For the half-back rule alone, read La Partage rule. For the locked-bet version, read En Prison rule.
Roulette Table Example
You place $40 on black at a French roulette table with La Partage.
The ball lands on 0.
At a normal single-zero table, your $40 loses.
With La Partage, the dealer returns $20 and keeps $20.
Now compare that with En Prison. You place $40 on black. The ball lands on 0. Instead of returning half immediately, the dealer marks your bet as imprisoned. On the next spin, black lands. Your $40 is returned. You do not win $40 profit. You simply recover the stake.
That distinction matters. La Partage settles immediately. En Prison delays settlement.
From the Casino Side:
French roulette is attractive to educated players, especially in higher-end rooms and online live dealer environments. The casino gives away some edge on protected even-money bets, but it may gain from higher minimums, longer play, stronger player trust, and a more premium image.
The dealer’s job becomes more technical. French call bets, racetrack bets, and zero-rule settlements require clean procedure. A mis-settled La Partage or En Prison bet can create immediate disputes because the player is often watching that rule closely.
The floor supervisor cares about signage. A table should not let players assume La Partage exists if the house does not offer it. “French-style layout” and “French zero rules” are not always the same thing.
Common Mistakes
- Assuming every single-zero table has French rules.
- Thinking La Partage applies to all roulette bets.
- Thinking En Prison pays a profit after the recovery spin.
- Treating call bets as advantage plays.
- Ignoring the table minimum because the edge looks attractive.
- Confusing the French layout language with a different wheel probability.
- Forgetting that protected even-money bets still have a house edge.
Hard Truth
French roulette is the best common version of roulette for even-money players, but “best” still means negative expectation.
FAQ
Is French roulette better than European roulette?
It can be, if it includes La Partage or En Prison on even-money bets. Plain single-zero roulette has a 2.70% edge. Protected even-money French rules can reduce the effective edge to about 1.35%.
Does French roulette have double zero?
Normally no. French roulette is normally single-zero roulette.
Does La Partage apply to straight-up numbers?
No. La Partage usually applies only to even-money bets: red/black, odd/even, and high/low.
Does En Prison mean I win on the next spin?
No. If the follow-up spin wins your original even-money bet, your stake is returned. You usually do not receive profit.
Are French call bets better than normal bets?
Not automatically. They cover wheel sectors, which can be convenient, but they usually do not remove the house edge.
Is French roulette good for beginners?
It can be, if the rules are clearly displayed and the table minimum fits the bankroll. Beginners should avoid complicated call bets until they understand basic roulette bets.
Where can I compare the numbers?
Use roulette odds, roulette odds chart, and the roulette odds calculator.
Deeper Insight
French roulette teaches a useful lesson: rules matter more than betting personality.
Many players obsess over whether to bet red, black, odd, even, first dozen, neighbors, birthdays, or a favorite number. That obsession misses the bigger lever. If you can cut the effective house edge on even-money bets from 2.70% to about 1.35%, that rule selection matters more than almost any chip pattern.
But it still has limits.
La Partage and En Prison do not turn red/black into a true coin flip. There is still a zero. The casino still keeps value when zero appears. The rule only softens the damage.
That is why French roulette is best understood as cost reduction, not a winning system.
Players also misunderstand call bets. Voisins du Zéro sounds sophisticated. Tiers du Cylindre sounds like something only insiders know. In reality, call bets are just packages of straight-up, split, trio, and other bets arranged around wheel sectors. They are useful for covering a wheel neighborhood quickly, not for predicting the ball.
If you want to play roulette with the least standard damage, choose single-zero with La Partage or En Prison, keep bet size modest, and control spin count. That is the practical truth.
Formula / Calculation
Standard single-zero even-money expected value for a $1 bet:
$$EV = \left(\frac{18}{37} \times 1\right) - \left(\frac{19}{37} \times 1\right)$$
$$EV = -\frac{1}{37} = -2.70%$$
With La Partage, a zero loses only half the $1 stake:
$$EV = \left(\frac{18}{37} \times 1\right) - \left(\frac{18}{37} \times 1\right) - \left(\frac{1}{37} \times 0.5\right)$$
$$EV = -\frac{0.5}{37} = -1.35%$$
Expected loss:
$$Expected\ Loss = Total\ Amount\ Wagered \times House\ Edge$$
For $1,000 total action on protected even-money French roulette:
$$Expected\ Loss = 1000 \times 0.0135 = 13.50$$
Formula Explanation in Plain English
On a normal single-zero even-money bet, 18 outcomes win, 18 outcomes lose, and zero also loses. That one extra losing pocket creates the 2.70% edge.
With La Partage, zero costs only half the bet. Since zero is the only extra losing outcome, cutting that zero loss in half cuts the effective edge in half.
Related Reading
Read the full roulette guide first if you are new. Then compare European vs American roulette to understand why one zero matters. For the exact zero protections, continue with La Partage rule and En Prison rule. For bet packages, go to call bets explained and racetrack betting layout. To estimate cost, use the expected loss calculator or house edge calculator.