Roulette odds and house edge for every bet
On a single zero wheel every bet has the same house edge, 2.70%, because there are 37 pockets and the payouts are set as if there were 36. A double zero wheel has 38 pockets and an edge of 5.26%. Red or black wins 48.65% of the time on the first and 47.37% on the second.
Every bet, both wheels
| Bet | Pays | Win chance, single zero | Win chance, double zero | Edge, single zero | Edge, double zero |
|---|---|---|---|---|---|
| Straight, 1 number | 35:1 | 2.70% | 2.63% | 2.70% | 5.26% |
| Split, 2 numbers | 17:1 | 5.41% | 5.26% | 2.70% | 5.26% |
| Street, 3 numbers | 11:1 | 8.11% | 7.89% | 2.70% | 5.26% |
| Corner, 4 numbers | 8:1 | 10.81% | 10.53% | 2.70% | 5.26% |
| Six line, 6 numbers | 5:1 | 16.22% | 15.79% | 2.70% | 5.26% |
| Dozen or column | 2:1 | 32.43% | 31.58% | 2.70% | 5.26% |
| Red, black, odd, even, 1-18, 19-36 | 1:1 | 48.65% | 47.37% | 2.70% | 5.26% |
| Top line 0, 00, 1, 2, 3 | 6:1 | 13.16% | 7.89% |
Own calculation with exact fractions, script roulette.py in our repo (growth6/daten/phase2/b1b). Edge = 1/37 on single zero, 2/38 on double zero, 3/38 for the five-number bet.
Spreading chips across the layout doesn't change anything. Every bet on a single zero table loses 1/37 of its stake on average, so covering 30 numbers just means 30 small bets at 2.70% each. The only thing that moves the number is the wheel itself, and on a double zero table you'll want to stay off the five-number line.
- Per $1,000 wagered, single zero
- $27.03
- Per $1,000 wagered, double zero
- $52.63
- Even-money bet with La Partage (half back on zero)
- 1.35% edge
- Stake Originals roulette, as listed
- 2.70% edge, 97.30% RTP
How long can red stay away?
| Spins in a row | 5 | 10 | 15 | 20 |
|---|---|---|---|---|
| No red | 3.57% | 0.128% | 0.005% | under 0.001% |
Own calculation: (19/37)^n. Zero counts as not red.
Ten blacks or zeros in a row happens about once in 780 tries of ten spins. Over a long evening at a busy live table that's not rare. The wheel has no memory, so the eleventh spin is still 48.65% red. Tables that show the last results are a display, and reading trends from them is how people end up raising their bets at the wrong moment.
Martingale, simulated
Martingale doubles the bet after every loss and goes back to $1 after a win. We ran it 200,000 times on red, single zero, with $255 in the bankroll, which covers seven straight losses ($1 + 2 + 4 + … + 128). A session stopped at $100 profit, or when the next doubled bet could no longer be paid.
- Sessions that reached +$100
- 61.4%
- Sessions that busted out
- 38.6%
- Average result per session
- −$19.40
- Average spins per session
- 162
- Chance of 8 non-reds in a row from any given spin
- 0.48%
Six sessions in ten you walk away a winner, and that's the trap. The losing sessions cost $255 or close to it, the winning ones pay $100, and the average still lands near the 2.70% the wheel takes on every spin. Table limits make it worse in a real casino, because they stop the doubling earlier than your bankroll would.
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Questions
What are the odds of winning on red?
18 in 37, or 48.65%, on a single zero wheel. 18 in 38, or 47.37%, on a double zero wheel.
Which roulette bet has the best odds?
On a single zero wheel all bets share the same 2.70% edge, so none is cheaper. Even-money bets with La Partage drop to 1.35%, with En Prison to about 1.39%.
What is the house edge on Stake roulette?
Stake's roulette page gives 2.70%, RTP 97.30%. That matches a 37-pocket single zero wheel.
Does the Martingale system work?
It wins small amounts often and loses big amounts rarely. In our 200,000-session run the average session still lost $19.40.
Sources
- Stake: Roulette game page (Wayback, 1 Sep 2026) · current page on stake.com. house edge 2.70%, RTP 97.30%; stake.com answers 403 to our fetcher Checked 12 November 2026
- Wizard of Odds: roulette basics. cross-check: La Partage 1.35%, single En Prison about 1.39%, five-number bet 7.89% Checked 12 November 2026
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