Roulette Payout Calculator
Check what a roulette bet really pays before you place it. Pick the bet type, enter your stake in dollars, choose an American (0 and 00) or European (single 0) wheel, and get the payout, win probability, and the average cost per spin.
Example: with Bet type Straight up (single number, 35:1) · Bet amount ($) 10 · Wheel type American (38 pockets: 0 and 00) → If it hits: $350 profit — $360 back including your $10 stake.
- Chance of winning2.63% — covers 1 of 38 pockets
- Payout vs true oddsPays 35 to 1, but true odds are 37 to 1 against
- Expected cost per spinAverage loss of $0.53 per spin — house edge 5.26%
Computed by the calculator below using its default values. Change any input to see your own numbers.
Payouts are the standard casino schedule. On an American wheel every bet except the top line loses 5.26% of the stake on average; the top line loses 7.89%.
Why every roulette bet costs the same 5.26%
Roulette payouts are built as if the wheel had 36 pockets, but an American wheel has 38 (1-36 plus 0 and 00). A straight-up bet pays 35:1 when the true odds are 37:1 against; a dozen pays 2:1 when the true odds are 26 to 12. Every standard bet returns 36/38 of its stake on average, which works out to a 2/38 = 5.26% house edge — the zeros are where the casino makes its money.
Two exceptions matter. The American top line (0, 00, 1, 2, 3) pays 6:1 against 33-to-5 true odds, losing 7.89% — the worst bet on the layout. And a European wheel has only one zero, so every bet there returns 36/37 and loses just 2.70%. If both wheels are available at the same limits, the single-zero table is strictly better.
How it’s calculated
Win probability = numbers covered / pockets (38 American, 37 European). Profit = stake × payout ratio. Expected value per spin = stake × ((payout + 1) × P(win) − 1). American house edge: 1 − 36/38 = 2/38 = 5.26% for all bets except the five-number top line, where 1 − 7 × 5/38 = 3/38 = 7.89%. European edge: 1 − 36/37 = 2.70%. Payout ratios: straight 35:1, split 17:1, street 11:1, corner 8:1, top line 6:1, six line 5:1, dozen and column 2:1, even money 1:1.
Assumes standard US payout rules with no la partage or en prison — those French rules cut the even-money edge on some European tables to 1.35%.
Roulette bets on an American wheel (0 and 00)
| Bet | Numbers covered | Payout | Win chance | House edge |
|---|---|---|---|---|
| Straight up | 1 | 35:1 | 2.63% | 5.26% |
| Split | 2 | 17:1 | 5.26% | 5.26% |
| Street | 3 | 11:1 | 7.89% | 5.26% |
| Corner | 4 | 8:1 | 10.53% | 5.26% |
| Top line (0-00-1-2-3) | 5 | 6:1 | 13.16% | 7.89% |
| Six line | 6 | 5:1 | 15.79% | 5.26% |
| Dozen / Column | 12 | 2:1 | 31.58% | 5.26% |
| Even money (red/black) | 18 | 1:1 | 47.37% | 5.26% |
Computed from the standard casino payout schedule with 38 pockets; edge = 1 − (payout + 1) × covered / 38.
Common mistakes
- Reading 35:1 as 35% odds — the payout ratio describes what you win, not your chance of winning (2.63% on a straight-up bet).
- Forgetting the stake comes back on a win: a $10 straight-up hit pays $350 profit plus your $10, for $360 total.
- Treating red/black as 50/50 — the zeros make it 18/38 = 47.37% on an American wheel.
- Playing the top line because it covers the zeros: at 7.89% it has the worst edge on the table.
Frequently asked questions
How are roulette payouts calculated?
Profit = stake × payout ratio, and the ratio depends on numbers covered: straight up pays 35:1, split 17:1, street 11:1, corner 8:1, six line 5:1, dozens and columns 2:1, even-money bets 1:1. A winning bet also returns your original stake.
What is the house edge in roulette?
On an American double-zero wheel every bet keeps 5.26% of your stake on average (1 − 36/38), except the five-number top line at 7.89%. A European single-zero wheel cuts the edge to 2.70% on every bet.
Do betting systems like Martingale beat the edge?
No. Every spin loses the same percentage on average regardless of how you size or sequence bets, and doubling after losses just risks hitting the table limit with a huge stake on the line.
Is a dozen bet smarter than a straight-up bet?
The average cost is identical — both lose 5.26% per spin on an American wheel. The dozen just trades a smaller payout (2:1) for more frequent wins (31.58%), which changes the swings, not the expectation.
Why is European roulette better for players?
One fewer pocket. With a single zero the wheel has 37 pockets instead of 38, so the same 36-pocket payout schedule returns 36/37 of stakes on average — a 2.70% edge instead of 5.26%.