Quick answer: this roulette calculator works out the payout, win chance and house edge for any combination of bets on a European, French or American wheel. Add your bets, and it shows what you win or lose on every number. One thing never changes: on a single-zero wheel every standard bet has a 2.70% house edge, and on a double-zero wheel 5.26%, so no mix of bets can beat the game. Only French roulette’s La Partage rule (1.35% on even-money bets) brings the edge down.
YOUR BETS: choose a bet, where it goes and your stake.
Results cover one spin. Every bet on the same wheel has the same house edge (except the American top line and La Partage even-money bets), so no combination of bets can beat it over time.
How to use the roulette calculator
- Pick the wheel. European and French wheels have 37 pockets (one zero); American wheels have 38 (0 and 00). French means the La Partage rule: you get half your even-money stake back when zero lands.
- Choose each bet and where it goes. Straight, split, street, corner, six line, dozen, column or an even-money bet. The “Covers” box lists every valid position, including the zero splits and streets.
- Enter your stake for each bet. Use “+ bet” to add up to 12 bets, and “×2” to double every stake.
- Read the results. The screen shows your chance of finishing ahead, your best and worst result and the house edge. The tables below it show each bet and what happens on every number.
Roulette payouts and odds
| Bet | Numbers covered | Pays | Win chance (single zero) | Win chance (double zero) |
|---|---|---|---|---|
| Straight up | 1 | 35:1 | 2.70% | 2.63% |
| Split | 2 | 17:1 | 5.41% | 5.26% |
| Street | 3 | 11:1 | 8.11% | 7.89% |
| Corner | 4 | 8:1 | 10.81% | 10.53% |
| First four (0-1-2-3, single zero only) | 4 | 8:1 | 10.81% | – |
| Top line (0-00-1-2-3, double zero only) | 5 | 6:1 | – | 13.16% |
| Six line | 6 | 5:1 | 16.22% | 15.79% |
| Dozen or column | 12 | 2:1 | 32.43% | 31.58% |
| Red/black, odd/even, 1-18/19-36 | 18 | 1:1 | 48.65% | 47.37% |
For more on each bet, see our roulette odds and payouts guide and how to play roulette.
Why combining bets doesn’t change the house edge
Roulette payouts are set as if the zero didn’t exist. A bet on n numbers pays (36 ÷ n) − 1 to 1, which would be a fair price on a 36-number wheel. Add the zero and every bet returns 36/37 of what you stake on average, a 2.70% house edge; add 00 as well and it returns 36/38, a 5.26% edge.
Because each bet loses the same share on average, any combination of them does too. Spreading chips changes how you win or lose (more small wins, or fewer big ones), but not how much you lose on average. The one exception on an American wheel is the top line, which pays 6:1 on five numbers and carries a 7.89% edge, the worst bet on the table.
Example: a three-bet spread
Here is a popular spread on a single-zero wheel, with £200 a spin: £140 on 19-36, £50 on the 13-18 six line and £10 on zero. Put it into the calculator and you get:
| Ball lands on | Numbers | Result |
|---|---|---|
| 19 to 36 | 18 | +£80 |
| 13 to 18 | 6 | +£100 |
| 0 | 1 | +£160 |
| 1 to 12 | 12 | −£200 |
You finish ahead on 25 of 37 numbers, a 67.57% chance, which feels like a winning system. But the one loss in three wipes out more than two average wins, and the expected loss is £5.41 a spin: exactly 2.70% of £200. The gambler’s fallacy and betting systems don’t change that either.
European, French or American roulette?
| Wheel | Pockets | House edge |
|---|---|---|
| European | 37 (single zero) | 2.70% on every bet |
| French (La Partage) | 37 (single zero) | 1.35% on even-money bets; 2.70% on the rest |
| American | 38 (0 and 00) | 5.26% on every bet except the top line (7.89%) |
If you have the choice, play French roulette with La Partage and stick to even-money bets. The American wheel costs you nearly twice as much per spin as the European one. For other low-edge games, see our low house edge games.
Want to try it for real? Our top-rated casino, 1win, offers online roulette; check which wheel a table uses before you bet. Use promo code Ultragambler when you sign up. 18+. New players only. T&Cs apply.
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How we checked this
Payouts and house edges match two independent sources, and the calculator does its own maths: it adds up your result on every pocket and divides by 37 or 38. We tested it against hand-worked examples on all three wheels.
- Payouts for every bet, the 2.70% and 5.26% house edges and the top line at 6:1 with a 7.89% edge: Wizard of Odds and Wikipedia.
- Zero bets, the first four at 8:1 and the La Partage rule: Wikipedia, with payouts matching the split and corner payouts from Wizard of Odds. The 1.35% La Partage edge is our own maths: half the 2.70% edge on even-money bets.
Last checked: 9 October 2026. Gambling is for adults (18+) only. If it stops being fun, see our responsible gambling guide.
Roulette calculator FAQs
Can any combination of roulette bets beat the house edge?
No. Every standard bet on a single-zero wheel has a 2.70% house edge (5.26% on a double-zero wheel), so any mix of them has the same edge. Spreading bets only changes how often you win and by how much.
What is the best bet in roulette?
An even-money bet on a French wheel with La Partage, at a 1.35% house edge. On European roulette all bets are equal at 2.70%. On American roulette avoid the top line (0-00-1-2-3), which has a 7.89% edge.
How do you calculate roulette payouts?
A winning bet pays its odds times your stake, plus your stake back. A £10 split pays 17:1, so you get £170 profit and your £10 back. The payout for n numbers is (36 ÷ n) − 1 to 1.
What are the odds of hitting a single number?
1 in 37 (2.70%) on a European or French wheel, and 1 in 38 (2.63%) on an American wheel. It pays 35:1, so the fair price would be 36:1 or 37:1.
Does the calculator work for online roulette?
Yes. Standard online roulette uses the same wheels and payouts. Check the game rules for the wheel type and whether La Partage applies.
