July 27, 2022

Roulette Payouts: How to Calculate Win

Emily Thompson
Written byEmily ThompsonWriter
Researched byPriya PatelResearcher
Localised byEthan WilliamsLocaliser

Roulette is an easy online casino game where players bet on a specific number that the ball will land on. But learning to calculate roulette payouts isn’t an option. That’s because roulette wheels can come in various forms, making it a little tricky for beginners. 

Roulette Payouts: How to Calculate Win

So, this post discusses everything you need to know about roulette payouts and how to get started with this table game. You’ll also learn how to tell apart different roulette wheels. 

What is a Roulette Wheel and Table?

Roulette is a casino game that involves spinning a wheel with 37 or 38 numbered and colored pockets. The standard roulette wheel has 0 to 36 red, black, or green sections. Remember that zero (0) or double zero (00) is the only number in the green pocket (s). Also, the colors alternate on a roulette wheel.

In most online casinos, the game starts with players making a bet on the number, color, or combination on which the ball will land. Then, the dealer will throw the ball and spin the wheel. If you accurately predict the outcome, you get a payout according to the paytable. Keep reading to learn more about that.

American Roulette vs. European Roulette

Before diving deeper into payouts and odds, what’s the difference between American and European Roulette? These two roulette wheels are very similar yet contrasting games. So, you won’t have any problems playing on the two wheels as long as you have some roulette knowledge.

Having said that, the main difference between these roulette wheels lies in the layout. To begin with the European wheel, this game has 37 pockets, including 1 to 36 red or black numbers and a single zero green pocket. 

On the other hand, the American wheel has a total of 38 pockets. This includes 1 to 36 red and black numbers and two green pockets. The green pockets have single zero (0) and double zero (00) digits.

Understanding the Roulette House Edge

The house edge, also called the house advantage or the house take, is the casino’s primary source of income. This is the mathematical edge that the casino has over players on a specific game, including roulette. So, the lower the house edge, the more chances you have of winning.

Below is the most straightforward formula for calculating the house edge:

House Edge = (Odds Against Success – House Odds) x Winning Probability x 100

In this formula, the Odds Against Success are the ways to lose divided by the ways to win. The Winning Probability is a way to win, divided by ways to win plus ways to lose. You still don’t get it?

An example using the European version

Despite the European wheel offering players 37 possible winning numbers, a single number payout remains at 35:1. This means a single unit bet at online casinos has a payout of 35 units plus the initial unit. 

Therefore, if you make a straight-up bet, your winning possibility is 1 out of the 36 possible losing numbers. That’s how the casino arrives at the 35:1 payout. 

This means the Odds Against Success are 36/1, whereas the House Odds are 35/1. Also, the overall probability of success is 1/37. 

Using the formula discussed above, the house edge for the European wheel is:

House Edge = (36/1 – 35/1) x 1/37 x 100 = 2.70%

Interestingly, most casinos offer a 35:1 payout across both wheels. So, if you use this formula to calculate the house edge for the American wheel, you’ll arrive at:

House Edge = (37/1 – 35/1) x 1/38 x 100 = 5.26%

Roulette Bet Types and Payouts

Roulette bets are available in two categories – inside and outside bets. Below is the complete breakdown:

Outside Bets

In outside bets, players don’t bet on specific roulette numbers. Instead, you go for the colors and number combinations. For this reason, these are the easiest roulette bets, with most giving players a 1:1 payout and almost 50% chance of winning.

Main outside bets include:

  • Red/Black: In this bet, players predict that the ball will land in a red or black pocket. If it does, the payout is 1:1.
  • Odd/Even: Will the ball land on an odd or even number? Correctly predict that and enjoy a 1:1 payout.
  • High/Low: You can bet on the ball to land on any number between 19-36 (high) or 1:18 (low). The payout is 1:1.
  • Dozens: You can get a 2:1 payout if the ball lands at 1-12 (first dozen), 13-24 (second dozen), or 24-36 (third dozen). 
  • Column: Most roulette tables have 12 numbers on a specific column. If the ball stops at a number in the selected column, the payout is 2:1.

Inside Bets

With inside bets, you predict that the ball will land on a specific digit or set of numbers. However, your chance of winning these bets is lower than outside bets. But the payout can be good.

Here are the main types of inside bets:

  • Straight Up: Betting on the ball to land on a particular number on the wheel has a 35:1 payout. This wager is also called a single number bet.
  • Street: You can bet on a row of three numbers like 11, 12, and 13 and get an 11:1 payout. 
  • Split: Split bets involve betting on two adjacent digits on the table. If you’re lucky, the payout is 17:1.
  • Double Street: This bet is sometimes called a line bet. Here, you predict a number in two adjoining rows with six digits. The payout in this bet is 5:1.
  • Corner: This bet is slightly similar to street bets. However, players bet on four digits instead of three. Players place their wager in the corner that merges the four numbers. And the payout is 8:1.


See, calculating roulette payouts can be very complex but easy at the same time. It all boils down to your experience on the wheel. Always remember that the European version is the most player-friendly version as it offers a lower number of pockets. And have fun!

About the author
Priya Patel
Priya Patel

Hailing from New Zealand's picturesque landscapes, Priya Patel is the research dynamo behind OnlineCasinoRank's in-depth insights. Her meticulous approach to data and trends has revolutionized how gamers perceive and navigate the online casino landscape.

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