One pocket, double the price
European roulette has 37 pockets. American roulette has 38 — the extra one being a second green zero. No payout changes to compensate. That single addition takes the house edge from 2.70% to 5.26%.
Expressed differently: for every $1,000 you wager, the European wheel expects to keep $27 and the American wheel $52.60. Same game, same feel, roughly twice the cost.
Side by side
| European | American | French (La Partage) | |
|---|---|---|---|
| Pockets | 37 | 38 | 37 |
| Zeros | 0 | 0 and 00 | 0 |
| House edge | 2.70% | 5.26% | 1.35% even money |
| RTP | 97.30% | 94.74% | 98.65% |
| Straight up | 35:1 | 35:1 | 35:1 |
| Red chance | 48.65% | 47.37% | 48.65% + half back |
| Cost / hour* | $13.50 | $26.30 | $6.75 |
* $10 average bet, 50 spins per hour.
The bet that only exists on American tables
The top line — 0, 00, 1, 2, 3 for 6:1 — carries a 7.89% house edge, the worst standard bet in roulette. It exists because five numbers do not divide neatly into the 35:1 structure. There is no situation in which it is the right bet.
Why American roulette still exists
Inertia and geography. The double-zero wheel is the default across most of North America, and many players have simply never played anything else. Online, both are usually available on the same site, which makes the choice trivial — and makes choosing the American wheel difficult to justify.
The practical rule
If a single-zero wheel is available at a stake you can play, play it. If a French table with La Partage is available and you bet even money, play that instead. Only accept a double-zero wheel when nothing else is running, and then keep the session short.
The same session, priced both ways
| Session | European | American | Difference |
|---|---|---|---|
| One hour, $5/spin, 50 spins | $6.75 | $13.15 | $6.40 |
| One evening, $10/spin, 150 spins | $40.50 | $78.90 | $38.40 |
| A weekend, $10/spin, 400 spins | $108 | $210 | $102 |
| A year, 2 h/week, $10/spin | $1,404 | $2,735 | $1,331 |
The right-hand column is the price of one extra green pocket. Nothing else about the two games differs — same payouts, same layout, same rhythm.
How lobbies blur the difference
Online lobbies list European and American tables side by side, often with near-identical thumbnails and titles that differ by one word. It is entirely possible to sit down at the more expensive game by accident and never notice, because the experience is the same.
Two habits fix it permanently: count the green pockets on the wheel before your first bet, and check whether the layout has a 00 box next to the 0. Fifteen seconds, every session.
Putting this into practice
Reading changes very little on its own. Three things reliably do.
First, open a free table and play 200 spins flat. Watch how the balance moves, how long the swings last, and how quickly 200 spins actually goes. That is the texture of the game, and it is not what most people expect.
Second, put your real stake and session length into the bankroll calculator. The hourly cost it returns is the honest price of the entertainment. If that number is comfortable, the rest is detail. If it is not, lower the stake or slow the table — those are the only two levers that work.
Third, if you are comparing casino offers, run them through the wagering calculator before you deposit rather than after.
