Roulette odds
Roulette odds calculator: every bet, every wheel, one table
This roulette odds calculator shows the probability, payout and house edge of every inside and outside bet at once. European roulette carries a 2.70% house edge on every standard bet; American roulette carries 5.26%, or 7.89% on the five-number top line. Pick a wheel type to compare them live.
| Bet | Covers | Numbers | Probability | Payout | House edge |
|---|---|---|---|---|---|
| Straight up | 1 number | 1/37 | 2.70% | 35:1 | 2.70% |
| Split | 2 adjacent numbers | 2/37 | 5.41% | 17:1 | 2.70% |
| Street | 3 numbers in a row | 3/37 | 8.11% | 11:1 | 2.70% |
| Corner | 4 numbers in a block | 4/37 | 10.81% | 8:1 | 2.70% |
| Six line | 6 numbers, two rows | 6/37 | 16.22% | 5:1 | 2.70% |
| Dozen | 12 numbers (1st, 2nd or 3rd 12) | 12/37 | 32.43% | 2:1 | 2.70% |
| Column | 12 numbers (one of 3 columns) | 12/37 | 32.43% | 2:1 | 2.70% |
| Even money | Red/black, odd/even, 1-18/19-36 | 18/37 | 48.65% | 1:1 | 2.70% |
Showing every standard bet on a european (single zero, 37 pockets).
What is the difference between inside and outside bets?
Inside bets sit on the numbered grid itself: straight up on a single number, split across two, street across a row of three, corner across a block of four, and six line across two adjoining rows of six. Outside bets sit around the edge of the layout, a dozen, a column, red or black, odd or even, high or low. The table above lists every one of them, and the wheel selector switches the underlying pocket count and, where relevant, the La Partage rule and the American-only top line bet.
Same edge on every bet, with one exception
Why would anyone back a single number at 35 to 1 instead of a safer even-money bet? For your long-run result it makes no difference: the payout on each bet is set precisely to offset how unlikely it is, so the house edge lands on exactly the same number, 2.70% on a standard European wheel, regardless of which one you pick. What changes is variance, a straight-up bet loses far more often but pays out far bigger when it hits, while an even-money bet wins close to half the time for a much smaller reward. The one exception in the table is the American-only top line bet, covering 0, 00, 1, 2 and 3 for 6 to 1, its payout doesn't track its true odds quite as closely as the rest, pushing its edge up to 7.89%, the worst number on the table.
Is European or American roulette better?
The biggest lever on your odds isn't which bet you choose, it's which wheel you're sat at. Adding a second zero pocket for the American wheel, with no payout adjustment anywhere to compensate, very nearly doubles the house edge across every single bet, from 2.70% to 5.26%. If a European or French wheel is available, it is simply the better game, full stop, no bet-selection trick closes that gap. Live variants change the maths as well: Lightning Roulette cuts the straight-up payout to 29 to 1 to fund its multipliers, which is worked through on the Crazy Time and Lightning Roulette odds page.
What is La Partage in roulette?
French wheels commonly carry a rule called La Partage, which returns half your stake on an even-money bet when the ball lands on zero, rather than taking the whole thing. It's the one adjustment on this page that changes a bet's underlying edge rather than just its variance, cutting even-money bets from 2.70% down to 1.35%, among the best odds you'll find on any standard casino game. It only applies to even-money bets specifically, dozens, columns and every inside bet still carry the full 2.70% on a French wheel. For comparison, the only bet in the casino with no house edge at all is the craps free odds bet.
None of this depends on prediction or strategy, these figures are fixed by the bet and the wheel. Whether AI, "hot number" tracking or a biased wheel can shift any of it is covered on the roulette AI hub page and the bias wheel checker.
The practical upshot
The table rules decide your cost, not the bet you choose.
Where the numbers come from
FAQ
Odds and payouts FAQ
What's the difference between inside and outside bets?+
Inside bets are placed directly on numbers inside the number grid, straight up, split, street, corner and six line, and cover fewer numbers for a bigger payout. Outside bets sit around the edge of the layout, dozens, columns, red/black, odd/even and high/low, covering more numbers for a smaller payout. On a standard wheel every one of them carries the same house edge regardless of which you pick.
Why is the American wheel worse than European?+
The American wheel adds a second zero pocket, 00, bringing the total to 38 instead of 37, without increasing any payout to compensate. That extra pocket alone nearly doubles the house edge, from 2.70% on a European wheel to 5.26% on an American one, on every single bet.
What's the worst bet on a roulette table?+
The top line or basket bet, available only on American wheels, covering 0, 00, 1, 2 and 3 for a payout of 6 to 1. It carries a house edge of 7.89%, noticeably worse than every other bet on the table, purely because its payout doesn't match its true odds as closely as the rest.
Does La Partage help?+
Yes, meaningfully, but only on even-money bets. When the ball lands on zero, La Partage returns half your stake instead of taking it all, which cuts the house edge on red/black, odd/even and high/low from 2.70% to 1.35%, among the best odds available anywhere on a standard casino floor.
Does any bet type give better odds than another (excluding the top line)?+
No. Every standard bet on a given wheel, from a single straight-up number to a full even-money bet, carries exactly the same house edge, because the payout on each is scaled precisely to its probability. Picking a straight-up bet over red/black changes your variance, bigger, rarer wins versus smaller, frequent ones, but not your long-run expected loss.
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