Bet | Other Names | Payout | p European | p American |
---|---|---|---|---|
Red / Black | Color bet | 1:1 | 48.65% | 47.37% |
Even / Odd | 1:1 | 48.65% | 47.37% | |
Low / High | 1-18 / 19-36 | 1:1 | 48.65% | 47.37% |
Dozen | 2:1 | 32.43% | 31.58% | |
Column | 2:1 | 32.43% | 31.58% | |
6 Number | Six line, Double street | 5:1 | 16.22% | 15.79% |
5 Number* | Top line, Basket, First five | 6:1 | - | 13.16% |
4 Number | Corner, Square | 8:1 | 10.81% | 10.53% |
3 Number | Street, Line | 11:1 | 8.11% | 7.89% |
2 Number | Split | 17:1 | 5.41% | 5.26% |
Single Number | Straight | 35:1 | 2.70% | 2.63% |
* This bet can only be placed on a double-zero roulette table (i.e. on an American table and not a European or French one). It covers the numbers 0, 00, 1, 2 and 3.
Key:
To calculate the payout of a single number bet on the European layout, you should know that the roulette table odds are 36 to 1. You should take away 1 from 36 to get 35, which is the payout rate. In a winning case scenario of a £10 single bet, you would win £350 (£10 x 35). Nord vpn new jersey servers. In American roulette, the wheel features a green 0 and 00, while the European version just has the single green 0. If you bet on 0 or 00 on an American wheel, and your bet hits, you'll get a payout.
- Blue bets = outside bets. These are the bets that cover large, fixed sections of the table. These probability of winning with these bets is greater, but they have lower payouts.
- Green bets = inside bets. These bets cover specific numbers on the table depending on where you place your chips. The payout for inside bets is bigger, but the probability of hitting is lower.
Below is a quick overview of all the different types of bets and odds that can be made in roulette.
There is also a small image accompanying each bet to highlight how to place each of the bets at the table. Some of these bets you may well have previously overlooked, so pay attention!
The following list is ordered by the payout of each roulette bet, starting with the lowest payouts and moving to the bigger payouts as you scroll down.
- Payout is in orange.
- Probability of each bet winning is in blue (assuming a single-zero European table is used).
Outside bets
Outside bets refer to bets made on types of numbers on the roulette wheel or large sections of the roulette table.
These bets have the lowest payouts, but the highest probabilities of success.
Red / Black - 1:1(48.65%)
Color bet
Payout | 1:1 |
---|---|
European Probability | 48.65% |
American Probability | 47.37% |
Total Numbers | 18 |
Numbers Covered | Black = 2, 4, 6, 8, 10, 11, 13, 15, 17, 20, 22, 24, 26, 28, 29, 31, 33, 35 Red = 1, 3, 5, 7, 9, 12, 14, 16, 18, 19, 21, 23, 25, 27, 30, 32, 34, 36 |
A color bet is a very popular bet, and gives odds of 1:1. So lets say for example you bet $5 on red, and after spinning the wheel the ball lands on red. You will get your $5 back, as well as an additional $5 in winnings, returning $10 in total.
Even / Odd - 1:1(48.65%)
Payout | 1:1 |
---|---|
European Probability | 48.65% |
American Probability | 47.37% |
Total Numbers | 18 |
Numbers Covered | Even = 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36 Odd = 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35 |
Similar to the color bet, the even or odd boxes offer the same payouts with equal odds for hitting even or odd as there are for hitting red or black. Unfortunately, the green 0 does not count as either even or odd.
Low (1-18) / High (19-36) - 1:1(48.65%)
Payout | 1:1 |
---|---|
European Probability | 48.65% |
American Probability | 47.37% |
Total Numbers | 18 |
Numbers Covered | Low = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 High = 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36 |
These bets split the table in half, with one bet allowing you to bet on all of the lower half of the numbers (1-18) and the other half allowing you to bet on all of the higher numbers (19-36). Also known as the low bet and high bet.
Dozen - 2:1(32.43%)
Payout | 2:1 |
---|---|
European Probability | 32.43% |
American Probability | 31.58% |
Total Numbers | 12 |
Numbers Covered | 1st Dozen = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 2nd Dozen = 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 3rd Dozen = 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36 |
The dozen bet allows players to bet on 3 different sections containing 12 numbers, which are; 1-12, 13-27 and 28-36. This bet offers slightly higher odds (2:1) than an even money bet, but the chances of winning on one spin are a little lower.
Column - 2:1(32.43%)
Payout | 2:1 |
---|---|
European Probability | 32.43% |
American Probability | 31.58% |
Total Numbers | 12 |
Numbers Covered | 1st Column = 1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, 34 2nd Column = 2, 5, 8, 11, 14, 17, 20, 23, 26, 29, 32, 35 3rd Column = 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36 |
The column bet is very similar to the dozen bet, but instead splits the table into 3 sections length-ways rather than side-ways. Each of these bets also offer odds of 2:1, just as with the dozen bets.
Inside bets
Inside bets refer to bets made on specific numbers or small groups of numbers on the roulette wheel.
These bets have the highest payouts, but the lowest probabilities of success.
6 Number - 5:1(16.22%)
Six line bet, Double street bet
Payout | 5:1 |
---|---|
European Probability | 16.22% |
American Probability | 15.79% |
Total Numbers | 6 |
Numbers Covered | e.g. 10, 11, 12, 13, 14, 15 |
This particular bet is not always available at online casinos, but can still be played at the majority of them. Often overlooked by many novice players, this bet allows you to bet on 6 numbers at a time via a bet split between two adjacent rows.
5 Number - 6:1(13.16%)
Note: This bet can only be placed on American roulette tables (ones with the green 00).
Five number bet, Top line bet, Basket bet, The worst possible bet you can make on any roulette table
Roulette Table 00 Payout
Payout | 6:1 |
---|---|
European Probability | n/a |
American Probability | 13.16% |
Total Numbers | 5 |
Numbers Covered | 0, 00, 1, 2, 3 |
The five number bet holds the title for the worst bet in roulette. The house edge for this bet is 7.89%, and it's the only bet to have a bigger (worse) house edge than any other. Every other bet on a double-zero roulette has a house edge of 5.26%.
If you're playing American roulette (which you shouldn't be anyway), avoid this bet.
4 Number - 8:1(10.81%)
Corner bet, Square bet
Payout | 8:1 |
---|---|
European Probability | 10.81% |
American Probability | 10.53% |
Total Numbers | 4 |
Numbers Covered | e.g. 11, 12, 14, 15 |
Also known as a square bet or corner bet. The 4 number bet allows you to bet on 4 adjoined numbers at a time. The chances of hitting any of these numbers is relatively low, but there is a decent payout for when you get lucky.
3 Number - 11:1(8.11%)
Street bet, Line bet
Payout | 11:1 |
---|---|
European Probability | 8.11% |
American Probability | 7.89% |
Total Numbers | 3 |
Numbers Covered | e.g. 16, 17, 18 |
This bet involves similar placement to that of the 6 number bet, except for the chip is placed on the edge of one row, rather than spread across two. This bet is also known as the street bet or stream bet.
Alternative 3 number bets.
You can also place 3-number bets at the top of the table using the green zero(s). These can be placed in both single-zero and double-zero roulette, although you have an extra 3-number bet in double-zero roulette courtesy of that extra 00 number.
The payouts and probability for this bet are the same for the respective roulette tables as the street bet above.
2 Number - 17:1(5.41%)
Split bet
Payout | 17:1 |
---|---|
European Probability | 5.41% |
American Probability | 5.26% |
Total Numbers | 2 |
Numbers Covered | e.g. 22, 23 |
American Roulette Payout
This is where the odds start to get pretty big. A 2 number bet or split bet allows you to bet on two adjacent numbers, offering you some pretty attractive odds of 17:1 — the second biggest payout available at a roulette table.
You can place a split bet across two numbers vertically or horizontally (if that makes any sense). In the screenshot above for example, you could just as easily bet on 22&25 or 22&19 instead of 22&23.
Single Number - 35:1(2.70%)
Straight bet
Payout | 35:1 |
---|---|
European Probability | 2.70% |
American Probability | 2.63% |
Total Numbers | 1 (no prizes, sorry) |
Numbers Covered | e.g. 32 |
The single number bet or straight bet is the big one, offering the greatest payouts at the roulette table of 35:1. Simply place your bet on one number and hope to get lucky.
Final thoughts.
So those are all of the different bets and odds of each of the bets when playing roulette online (or live for that matter). There is no restriction to how many different bets you can place at the roulette table, so go wild and see how it turns out. Just remember to enjoy yourself!
Read the article on called bets for information on the special bets available on the racetrack roulette wheel. The snake bet is also worth a look if you're feeling exotic.
Rank | Casino | Rating | Payment Methods | Payout Time | Links |
---|---|---|---|---|---|
1 | RatingA | Payment Methods | Payout TimeWithin 24 Hours | ||
2 | RatingA | Payment Methods | Payout Time1-2 Days | ||
3 | RatingB+ | Payment Methods | Payout Time1-3 Days | ||
4 | RatingC+ | Payment Methods | Payout Time2-5 Days | ||
5 | RatingD | Payment Methods | Payout Time2-3 Days |
For the most part, calculating roulette payouts is just a matter of multiplication. Each bet pays out at certain odds, and that determines what you multiply the bet by to get the payout. Also, as with most table games, the payouts are done on an X to Y basis, as opposed to an X for Y basis.
This post wants to cover roulette payouts in some degree of detail, though, including how much each bet pays off.
More importantly, I want to explain how the croupier is able to calculate payouts for roulette so quickly. Guess what? They have a system for that.
Payout Odds in Gambling
When you're gambling on something, you get paid off using odds. Some games offer even odds, which means that if you bet $100, you win $100 when you win.
Most games, though, have various payouts for various kinds of bets.
The top jackpot on a video poker machine pays off at 800 for 1.
And that's an important distinction. There's a big difference between a payoff of 800 for 1 and a payoff of 800 to 1.
With table games like roulette, the payoffs are in the form of 2 to 1, 3 to 1, 35 to 1, etc.
This means that if you win the bet, you get to keep the amount you bet, and you get the winnings along with it.
If you bet $100 on a single number at the roulette table and win, you get a payoff of $3,500. But you also get to keep your $100.
With gambling machines, payouts are made on a 'for' basis instead of a 'to' basis. This means your winnings are traded for what you risked.
If you bet $5 on a slot machine and win a $10 payout, you don't get your $5 back on top of that.
This is an important distinction you should make. Most gamblers don't stick just with roulette, so if you're going to play other games — and you probably will — you should understand how that works.
Specific Payouts in the Game of Roulette
In roulette, you have a huge variety of bets you can place. You bet on a single number. Or you can bet on two numbers — if either of those numbers come up, you win. Or you can bet on three numbers, and if any of those three numbers come up, you win.
The more likely it is for you to win, the lower the payout is.
A bet on black wins almost half the time. The payoff for that bet is only 1 to 1, or even money.
A bet on a single number pays off at 35 to 1, which is a big payoff, but it also only wins 1 out of every 38 spins on average.
The Difference Between the Odds of Winning and the Payout Odds
The casino makes its money from the difference between the odds of winning and the payout odds.
You know how you can express the payout on a bet as odds?
35 to 1 is an example of how you'd express a payoff on the single number bet.
The odds of winning can also be expressed in the same way.
On a standard American roulette wheel, you have 37 ways to lose a single number bet and only one way to win.
This means the odds of winning are 37 to 1.
Since the odds of winning are lower than the payoff for the bet, the casino makes a profit in the long run.
Once out of every 38 spins, they'll pay off a single number bet, but they'll only pay off 35 to 1 on that bet. The rest of the money goes into the casino's pocket.
The casino deals in long-term averages, especially when it comes to roulette.
Roulette Bets and Their Payoffs
Here's a list of bets you can make at the roulette table and how much each of them pays off.
The Outside Bets
These are the bets on the outside of the betting surface, and they're the bets that pay off the most often. As a result, you win less with these bets.
Here are the outside bets you can make:
- Red(or Black) – You can bet on the color of the number, and the payout is even money — 1 to 1
- Even (or Odd) – You can bet that the number will be even or odd, and the payout is again even money — 1 to 1
- Low (or High) – You can bet that the number will be 1-18 (low) or 19-36 (high). The payout is even money on this one, too
- Columns – The numbers on the betting surface are organized into three columns. You can bet that the ball will land on one of the numbers in that column. The payoff, if you guess right, is 2 to 1
- Dozens – The numbers can be divided into 1st third (1-12), 2nd third (13-24), and 3rd third (25-36). If you guess right, you get a 2 to 1 payout
On all these outside bets, 0 and 00 count as losses. Those numbers are green, and they're not considered even or odd, high or low.
What Does 00 Payout In Roulette
The Inside Bets
Roulette Payout Odds
These are the bets on the inside of the betting surface. They pay out better but have a bigger chance of losing.
Here are the inside bets you can make:
- Straight Up – This is a bet on a single number and pays off at 35 to 1
- Split – This is a bet on two numbers that are next to each other. It pays off at 17 to 1
- Street – This is a bet on three numbers, and it pays off at 11 to 1
- Corners – This is a bet on four numbers, and it pays off at 8 to 1
- The 5-Number Bet – You can only bet on 0, 00, 1, 2, and 3 if you want to bet on five numbers, and it pays off at 6 to 1. This is the only bet on the roulette table with a different house edge from the other bets — 7.89% (the other bets have a house edge of 5.26%)
- Line – This is a bet on six numbers and pays off at 5 to 1
All these bets would be a break-even proposition in the long run IF the wheel didn't have a green 0 and a green 00.
How the Croupier Makes the Payouts So Quickly
The first thing the croupier does after the decision is to clear all the losing bets off the roulette table. Since he's intimately familiar with the layout of the betting surface, this doesn't take long at all.
Also, all the players at the roulette table have chips that are specifically colored so that they have the same color. You can't use the roulette chips at the other table. This enables the croupier to tell your bet from someone else's. It's the color of the chips.
To calculate the payouts, you just multiply the bet by the payout odds.
If someone bet two chips on a single number and it won, you'd multiply 2 by 35 and get 70. That's how many chips you'd give the player in winnings.
He doesn't really have a magical system, either. He knows the payouts for the various bets, and he's able to do the multiplication in his head. It's easy multiplication, but even if it weren't, he'd eventually just be able to memorize the correct payout relative to the number of chips bet.
Also, he doesn't really think of the chips as money. They're just betting units.
Can Any of This Information Help Me Win at Roulette?
Naw.
Roulette's a negative expectation game.
You might get lucky in the short run, but if you play long enough, the math behind the payouts will eventually reduce your bankroll to 0.
Conclusion
And that's how to calculate roulette payouts. You just memorize which bets are possible and how much they pay off. Once you know that, calculating the payouts is just a matter of multiplication.
Croupiers are able to do it quickly because they do it all day every day.
I'm able to make change in my head because I worked for years on cash registers that didn't calculate change. I know how to subtract from 100 without any effort at all.
Calculating roulette payouts is a similar skill.
6 Number - 5:1(16.22%)
Six line bet, Double street bet
Payout | 5:1 |
---|---|
European Probability | 16.22% |
American Probability | 15.79% |
Total Numbers | 6 |
Numbers Covered | e.g. 10, 11, 12, 13, 14, 15 |
This particular bet is not always available at online casinos, but can still be played at the majority of them. Often overlooked by many novice players, this bet allows you to bet on 6 numbers at a time via a bet split between two adjacent rows.
5 Number - 6:1(13.16%)
Note: This bet can only be placed on American roulette tables (ones with the green 00).
Five number bet, Top line bet, Basket bet, The worst possible bet you can make on any roulette table
Roulette Table 00 Payout
Payout | 6:1 |
---|---|
European Probability | n/a |
American Probability | 13.16% |
Total Numbers | 5 |
Numbers Covered | 0, 00, 1, 2, 3 |
The five number bet holds the title for the worst bet in roulette. The house edge for this bet is 7.89%, and it's the only bet to have a bigger (worse) house edge than any other. Every other bet on a double-zero roulette has a house edge of 5.26%.
If you're playing American roulette (which you shouldn't be anyway), avoid this bet.
4 Number - 8:1(10.81%)
Corner bet, Square bet
Payout | 8:1 |
---|---|
European Probability | 10.81% |
American Probability | 10.53% |
Total Numbers | 4 |
Numbers Covered | e.g. 11, 12, 14, 15 |
Also known as a square bet or corner bet. The 4 number bet allows you to bet on 4 adjoined numbers at a time. The chances of hitting any of these numbers is relatively low, but there is a decent payout for when you get lucky.
3 Number - 11:1(8.11%)
Street bet, Line bet
Payout | 11:1 |
---|---|
European Probability | 8.11% |
American Probability | 7.89% |
Total Numbers | 3 |
Numbers Covered | e.g. 16, 17, 18 |
This bet involves similar placement to that of the 6 number bet, except for the chip is placed on the edge of one row, rather than spread across two. This bet is also known as the street bet or stream bet.
Alternative 3 number bets.
You can also place 3-number bets at the top of the table using the green zero(s). These can be placed in both single-zero and double-zero roulette, although you have an extra 3-number bet in double-zero roulette courtesy of that extra 00 number.
The payouts and probability for this bet are the same for the respective roulette tables as the street bet above.
2 Number - 17:1(5.41%)
Split bet
Payout | 17:1 |
---|---|
European Probability | 5.41% |
American Probability | 5.26% |
Total Numbers | 2 |
Numbers Covered | e.g. 22, 23 |
American Roulette Payout
This is where the odds start to get pretty big. A 2 number bet or split bet allows you to bet on two adjacent numbers, offering you some pretty attractive odds of 17:1 — the second biggest payout available at a roulette table.
You can place a split bet across two numbers vertically or horizontally (if that makes any sense). In the screenshot above for example, you could just as easily bet on 22&25 or 22&19 instead of 22&23.
Single Number - 35:1(2.70%)
Straight bet
Payout | 35:1 |
---|---|
European Probability | 2.70% |
American Probability | 2.63% |
Total Numbers | 1 (no prizes, sorry) |
Numbers Covered | e.g. 32 |
The single number bet or straight bet is the big one, offering the greatest payouts at the roulette table of 35:1. Simply place your bet on one number and hope to get lucky.
Final thoughts.
So those are all of the different bets and odds of each of the bets when playing roulette online (or live for that matter). There is no restriction to how many different bets you can place at the roulette table, so go wild and see how it turns out. Just remember to enjoy yourself!
Read the article on called bets for information on the special bets available on the racetrack roulette wheel. The snake bet is also worth a look if you're feeling exotic.
Rank | Casino | Rating | Payment Methods | Payout Time | Links |
---|---|---|---|---|---|
1 | RatingA | Payment Methods | Payout TimeWithin 24 Hours | ||
2 | RatingA | Payment Methods | Payout Time1-2 Days | ||
3 | RatingB+ | Payment Methods | Payout Time1-3 Days | ||
4 | RatingC+ | Payment Methods | Payout Time2-5 Days | ||
5 | RatingD | Payment Methods | Payout Time2-3 Days |
For the most part, calculating roulette payouts is just a matter of multiplication. Each bet pays out at certain odds, and that determines what you multiply the bet by to get the payout. Also, as with most table games, the payouts are done on an X to Y basis, as opposed to an X for Y basis.
This post wants to cover roulette payouts in some degree of detail, though, including how much each bet pays off.
More importantly, I want to explain how the croupier is able to calculate payouts for roulette so quickly. Guess what? They have a system for that.
Payout Odds in Gambling
When you're gambling on something, you get paid off using odds. Some games offer even odds, which means that if you bet $100, you win $100 when you win.
Most games, though, have various payouts for various kinds of bets.
The top jackpot on a video poker machine pays off at 800 for 1.
And that's an important distinction. There's a big difference between a payoff of 800 for 1 and a payoff of 800 to 1.
With table games like roulette, the payoffs are in the form of 2 to 1, 3 to 1, 35 to 1, etc.
This means that if you win the bet, you get to keep the amount you bet, and you get the winnings along with it.
If you bet $100 on a single number at the roulette table and win, you get a payoff of $3,500. But you also get to keep your $100.
With gambling machines, payouts are made on a 'for' basis instead of a 'to' basis. This means your winnings are traded for what you risked.
If you bet $5 on a slot machine and win a $10 payout, you don't get your $5 back on top of that.
This is an important distinction you should make. Most gamblers don't stick just with roulette, so if you're going to play other games — and you probably will — you should understand how that works.
Specific Payouts in the Game of Roulette
In roulette, you have a huge variety of bets you can place. You bet on a single number. Or you can bet on two numbers — if either of those numbers come up, you win. Or you can bet on three numbers, and if any of those three numbers come up, you win.
The more likely it is for you to win, the lower the payout is.
A bet on black wins almost half the time. The payoff for that bet is only 1 to 1, or even money.
A bet on a single number pays off at 35 to 1, which is a big payoff, but it also only wins 1 out of every 38 spins on average.
The Difference Between the Odds of Winning and the Payout Odds
The casino makes its money from the difference between the odds of winning and the payout odds.
You know how you can express the payout on a bet as odds?
35 to 1 is an example of how you'd express a payoff on the single number bet.
The odds of winning can also be expressed in the same way.
On a standard American roulette wheel, you have 37 ways to lose a single number bet and only one way to win.
This means the odds of winning are 37 to 1.
Since the odds of winning are lower than the payoff for the bet, the casino makes a profit in the long run.
Once out of every 38 spins, they'll pay off a single number bet, but they'll only pay off 35 to 1 on that bet. The rest of the money goes into the casino's pocket.
The casino deals in long-term averages, especially when it comes to roulette.
Roulette Bets and Their Payoffs
Here's a list of bets you can make at the roulette table and how much each of them pays off.
The Outside Bets
These are the bets on the outside of the betting surface, and they're the bets that pay off the most often. As a result, you win less with these bets.
Here are the outside bets you can make:
- Red(or Black) – You can bet on the color of the number, and the payout is even money — 1 to 1
- Even (or Odd) – You can bet that the number will be even or odd, and the payout is again even money — 1 to 1
- Low (or High) – You can bet that the number will be 1-18 (low) or 19-36 (high). The payout is even money on this one, too
- Columns – The numbers on the betting surface are organized into three columns. You can bet that the ball will land on one of the numbers in that column. The payoff, if you guess right, is 2 to 1
- Dozens – The numbers can be divided into 1st third (1-12), 2nd third (13-24), and 3rd third (25-36). If you guess right, you get a 2 to 1 payout
On all these outside bets, 0 and 00 count as losses. Those numbers are green, and they're not considered even or odd, high or low.
What Does 00 Payout In Roulette
The Inside Bets
Roulette Payout Odds
These are the bets on the inside of the betting surface. They pay out better but have a bigger chance of losing.
Here are the inside bets you can make:
- Straight Up – This is a bet on a single number and pays off at 35 to 1
- Split – This is a bet on two numbers that are next to each other. It pays off at 17 to 1
- Street – This is a bet on three numbers, and it pays off at 11 to 1
- Corners – This is a bet on four numbers, and it pays off at 8 to 1
- The 5-Number Bet – You can only bet on 0, 00, 1, 2, and 3 if you want to bet on five numbers, and it pays off at 6 to 1. This is the only bet on the roulette table with a different house edge from the other bets — 7.89% (the other bets have a house edge of 5.26%)
- Line – This is a bet on six numbers and pays off at 5 to 1
All these bets would be a break-even proposition in the long run IF the wheel didn't have a green 0 and a green 00.
How the Croupier Makes the Payouts So Quickly
The first thing the croupier does after the decision is to clear all the losing bets off the roulette table. Since he's intimately familiar with the layout of the betting surface, this doesn't take long at all.
Also, all the players at the roulette table have chips that are specifically colored so that they have the same color. You can't use the roulette chips at the other table. This enables the croupier to tell your bet from someone else's. It's the color of the chips.
To calculate the payouts, you just multiply the bet by the payout odds.
If someone bet two chips on a single number and it won, you'd multiply 2 by 35 and get 70. That's how many chips you'd give the player in winnings.
He doesn't really have a magical system, either. He knows the payouts for the various bets, and he's able to do the multiplication in his head. It's easy multiplication, but even if it weren't, he'd eventually just be able to memorize the correct payout relative to the number of chips bet.
Also, he doesn't really think of the chips as money. They're just betting units.
Can Any of This Information Help Me Win at Roulette?
Naw.
Roulette's a negative expectation game.
You might get lucky in the short run, but if you play long enough, the math behind the payouts will eventually reduce your bankroll to 0.
Conclusion
And that's how to calculate roulette payouts. You just memorize which bets are possible and how much they pay off. Once you know that, calculating the payouts is just a matter of multiplication.
Croupiers are able to do it quickly because they do it all day every day.
I'm able to make change in my head because I worked for years on cash registers that didn't calculate change. I know how to subtract from 100 without any effort at all.
Calculating roulette payouts is a similar skill.