Roulette Payout Calculator - Bet Winnings & Odds
Instantly calculate your potential payout, net winnings, payout odds, and win probability for any bet on a European or American roulette wheel.
Select the roulette wheel type, choose your bet type, enter your wager, and click Calculate to see the complete payout breakdown.
Roulette Payout Calculator - Bet Winnings & Odds
Instantly calculate your potential payout, net winnings, payout odds, and win probability for any bet on a European or American roulette wheel.
About the Roulette Payout Calculator
Roulette is one of the oldest and most iconic casino games in the world. Whether you are drawn to the spinning wheel in a land-based casino or prefer an online platform, understanding how payouts are calculated is essential to playing intelligently. The roulette payout calculator helps you determine exactly how much you stand to win — or lose — before you place your chips.
There are two main variants of the game. The European roulette wheel has 37 pockets: numbers 1 through 36 and a single green zero. The American roulette wheel adds an extra double-zero pocket, giving it 38 pockets in total. This seemingly small difference has a significant impact on the house edge and on your win probability. On a European wheel the house edge is approximately 2.7%, while on an American wheel it rises to about 5.26%. If you have a choice, European roulette is the mathematically superior option for the player.
Roulette bets fall into two broad categories: inside bets and outside bets. Inside bets are placed on specific numbers or small groups of numbers on the inner portion of the betting layout. They carry higher payout odds but lower probabilities of winning. Outside bets cover larger groups of numbers — colours, odd/even, columns, and dozens — and offer lower payouts with higher win probabilities.
The most basic inside bet is the Straight Up, a bet on a single number. If the ball lands on your number, the casino pays 35:1 — meaning a $10 bet returns $360 in total (your $10 stake plus $350 profit). The payout formula for all standard bets is: Total Payout = Bet × (Payout Odds + 1), and Net Winnings = Bet × Payout Odds.
The win probability for any bet is calculated by dividing the number of pockets your bet covers by the total number of pockets on the wheel. A Straight Up bet on a European wheel has a probability of 1/37 ≈ 2.70%. An even-money outside bet such as Red/Black has a probability of 18/37 ≈ 48.65% on the same wheel. On an American wheel those figures become 1/38 ≈ 2.63% and 18/38 ≈ 47.37% respectively.
The house edge arises because the casino pays out at odds that would be fair only if the green zero pockets did not exist. For a Straight Up bet with no zeros, the fair payout would be 36:1; the casino pays 35:1. That one unit withheld on every 37 or 38 outcomes is the casino's mathematical advantage. No betting system — Martingale, Fibonacci, Labouchere, or any other — can overcome this edge in the long run. What these systems can do is alter the distribution of outcomes: some create many small wins with rare large losses, others do the reverse.
Use this calculator to compare bet types side by side, to understand the risk-reward profile of your preferred strategy, and to make more informed decisions at the table. Responsible gaming means never wagering more than you can comfortably afford to lose, and always treating roulette as entertainment rather than a source of income.
Roulette payout examples
Three realistic bet scenarios showing how the payout and probability are calculated for European and American wheels.
| Bet scenario | Total Payout | Notes |
|---|---|---|
| $10 Straight Up — European wheel | $360.00 (net $350.00) | Payout odds 35:1. Win probability 1/37 ≈ 2.70%. Highest-risk, highest-reward inside bet. |
| $20 Dozen — American wheel | $60.00 (net $40.00) | Payout odds 2:1. Win probability 12/38 ≈ 31.58%. Covers 12 numbers (1-12, 13-24, or 25-36). |
| $50 Red/Black — European wheel | $100.00 (net $50.00) | Payout odds 1:1. Win probability 18/37 ≈ 48.65%. The closest to an even-money bet in roulette. |
How to use the roulette payout calculator
- Select the wheel type — European (37 pockets, lower house edge) or American (38 pockets, includes a double-zero).
- Choose your bet type from the dropdown. The list shows inside bets (Straight Up, Split, Street, Corner, Six Line) and outside bets (Column, Dozen, Red/Black, Odd/Even, Low/High). The Five Number bet is available for American wheels only.
- Enter your bet amount in the Bet Amount field. Use any positive number — dollars, chips, or units.
- Click Calculate. The results panel shows Total Payout, Net Winnings, Payout Odds, and Win Probability for the selected bet.
- Click Reset to clear the inputs and start a new calculation with different parameters.
Roulette payout calculator FAQ
What is the difference between European and American roulette?
European roulette has 37 pockets (1-36 plus a single 0), giving a house edge of about 2.7%. American roulette adds a 00 pocket for 38 total pockets and a house edge of about 5.26%. All payout odds are the same between the two versions except for the Five Number bet, which only exists on American wheels.
How is the total payout calculated?
Total Payout = Bet Amount × (Payout Odds + 1). For example, a $10 Straight Up bet at 35:1 returns $10 × 36 = $360. The Net Winnings (profit only) = Bet Amount × Payout Odds = $10 × 35 = $350.
What are payout odds and how do I read them?
Payout odds are expressed as X:1 — for every 1 unit you bet, you receive X units in profit. A 35:1 payout on a $10 wager means you win $350 and get your $10 stake back, for a total of $360 in hand. Higher payout odds mean a lower probability of winning.
Can betting systems like the Martingale beat the house edge?
No. Every roulette bet has a negative expected value due to the house edge, and no staking strategy can change this mathematical reality. The Martingale and similar systems alter how wins and losses are distributed over time but cannot produce a long-run profit. They also carry the risk of catastrophic loss when hitting table limits or running out of bankroll during a losing streak.
What is the Five Number bet and why is it considered unfavorable?
The Five Number bet (also called the Basket bet) covers the pockets 0, 00, 1, 2, and 3 on an American wheel. It pays 6:1 but covers 5 of 38 pockets, giving a win probability of 13.16%. Its house edge is approximately 7.89%, which is higher than any other bet on the American wheel, making it the worst bet in standard roulette.
How does win probability change between bet types?
Win probability equals the number of pockets your bet covers divided by the total number of pockets on the wheel. A Straight Up bet covers 1 pocket out of 37 (European) at about 2.70%, while a Red/Black bet covers 18 pockets out of 37 at about 48.65%. As coverage increases, the payout odds decrease proportionally, keeping the expected value roughly constant at -2.70% (European) or -5.26% (American).