European roulette is the single-zero form of roulette: numbers 1 through 36 plus one green 0, for 37 pockets in total.
Its standard payouts are the same familiar payouts used on double-zero roulette. The mathematical improvement comes from having one fewer losing pocket while keeping those payouts unchanged.
What the name guarantees—and what it does not
A game advertised as European roulette normally tells you the wheel format. It does not automatically promise French-language calls, a racetrack layout, La Partage, En Prison, or a particular table minimum.
| Feature | European roulette normally means |
|---|---|
| Wheel | One zero and numbers 1–36 |
| Total pockets | 37 |
| Straight-up payout | 35 to 1 |
| Standard house edge | 2.7027% |
| La Partage | Only if specifically stated |
| En Prison | Only if specifically stated |
This is why European roulette and French roulette overlap but are not perfect synonyms. French roulette is usually single-zero and often uses a French layout or special zero treatment. The French roulette rules page covers that fuller ruleset.
Why every standard bet carries the same basic edge
Take a straight-up number. It wins on 1 of 37 pockets and pays 35 to 1. Counting the returned stake, a win produces 36 units back for a one-unit wager.
EV = \left(\frac{1}{37}\times 35\right) + \left(\frac{36}{37}\times -1\right)EV = -\frac{1}{37} \approx -0.027027So the house edge is:
\text{House edge}=\frac{1}{37}=2.7027\%The same one-unit shortfall appears across standard splits, streets, corners, dozens, columns, and even-money bets because the payout table is built as though there were 36 outcomes while the zero creates a 37th.
The practical comparison
| Version | Pockets | Green pockets | Standard edge |
|---|---|---|---|
| European roulette | 37 | 0 | 2.7027% |
| American double-zero roulette | 38 | 0 and 00 | 5.2632% |
| Triple-zero roulette | 39 | 0, 00, 000 | 7.6923% |
If table minimums and speed are comparable, the single-zero wheel is the lower-cost choice.
A player staking $25 on red for 100 spins creates $2,500 of action. Expected loss is:
| Wheel/rule | Edge | Expected loss on $2,500 action |
|---|---|---|
| European, ordinary zero rule | 2.7027% | $67.57 |
| European with La Partage on the qualifying bet | 1.3514% | $33.78 |
| American double zero | 5.2632% | $131.58 |
These are long-run averages, not session forecasts. A lower edge changes the price, not the randomness of the next spin.
Zero rules belong to the table, not the label
With ordinary settlement, zero loses an even-money wager such as red/black, odd/even, or 1–18/19–36.
Under La Partage, a qualifying even-money bet typically loses only half when zero appears. The edge on those bets becomes approximately:
\frac{0.5}{37}=1.3514\%En Prison can also alter zero settlement by holding the wager for a later spin under the stated procedure. Exact treatment varies, so read the table rules rather than assuming every single-zero game includes it.
Bet layout and wheel order are different maps
The felt arranges numbers numerically for placing inside and outside wagers. The wheel places them in a non-numerical physical sequence. A neighbor bet or racetrack sector follows wheel order; a street or corner follows layout adjacency.
This distinction matters when a player says “the numbers next to 17.” On the layout, that phrase can mean grid neighbors. On a racetrack, it means physical wheel neighbors. The game’s house edge does not improve because the numbers are grouped into a sector.
Standard wagers and their true hit rates
The payout names do not change on a single-zero wheel, but the probabilities use 37 as the denominator.
| Wager | Numbers covered | Payout | Win probability |
|---|---|---|---|
| Straight up | 1 | 35 to 1 | 1/37 = 2.7027% |
| Split | 2 | 17 to 1 | 2/37 = 5.4054% |
| Street | 3 | 11 to 1 | 3/37 = 8.1081% |
| Corner | 4 | 8 to 1 | 4/37 = 10.8108% |
| Six line | 6 | 5 to 1 | 6/37 = 16.2162% |
| Dozen or column | 12 | 2 to 1 | 12/37 = 32.4324% |
| Even-money bet | 18 | 1 to 1 | 18/37 = 48.6486% |
A higher hit rate does not mean a lower standard house edge. The payouts scale so that all of these ordinary bets retain the same 1/37 mathematical advantage. What changes is variance: straight-up bets lose often and pay more, while even-money bets win more often and pay less.
Physical wheel, live dealer, and RNG versions
European roulette describes the number of pockets, not the delivery technology. A casino-floor wheel, a streamed live-dealer wheel, and a software-generated roulette game can all use the 37-outcome format. The live versus online roulette comparison explains the evidence and pace differences.
For a physical wheel, ball and wheel procedures determine the result. For an RNG version, approved software generates the outcome. Neither format changes the 2.7027% standard edge merely because the presentation is faster, slower, or more realistic.
Table limits and chip values are separate from wheel quality
A single-zero wheel can still be an expensive table if its minimum is too high for the intended session. Roulette also uses different chip systems. Some tables issue non-value color chips whose cash value is assigned to one player at that table; others accept ordinary value chips. The dealer should confirm the value before play begins.
Suppose one table offers a $5 minimum but requires five $1 chips on every spin, while another has a $10 minimum that can be placed as one even-money wager. Both are European roulette, yet they create different practical exposure and betting flexibility. Compare the required total stake, not only the denomination printed on one chip.
Maximums also differ by bet type. A table may cap straight-up, split, or corner wagers separately from outside bets. These limits manage payout exposure; they do not alter the probability or house edge of a permitted wager.
Rules sources and terminology
Official regulated rules illustrate the format directly. Massachusetts roulette rules specify that a single-zero wheel has 37 equally spaced compartments and set the standard wager and payout procedures. See the Massachusetts roulette rules.
For an example of French roulette procedures, including special calls and zero treatment, consult the Loto-Québec French roulette rules. That source also shows why a French presentation should not be assumed from the words “European roulette” alone.
A precise way to choose a table
Check, in order:
- number of green pockets;
- whether La Partage or En Prison applies;
- minimum and maximum bets;
- pace and commission rules, if any;
- whether the displayed game is physical-wheel, live-dealer, or RNG roulette.
The American roulette definition isolates the double-zero version, and the roulette odds calculator lets you compare common wagers. No staking system changes the 37-pocket probability structure.
European roulette is not a strategy. It is a better rules selection than otherwise equivalent double- or triple-zero roulette.