Roulette wheel

Definition and basic info

The most reliable definition is given by Oxford's English Dictionary, according to which roulette is played with a ball dropped on a numbered wheel, called roulette wheel.

There are two types of roulette wheels:

Roulette Type

Number of slots

From to

House edge

Profit after $1

American Roulette Wheel


0 to 36+00


52 cents

European Roulette Wheel


0 to 36


27 cents

How to calculate roulette odds:



American System

- (37-37)/38 multiplied by 100 = -5.26%

European System

- (35-36)/37 multiplied by 100 = -2.70%

The Roulette Wheel consists of a spinning wheel and of a table layout specific for the game.

  • The spinning wheel: is equipped with 37 slots which are randomly ordered and colored (black/red). Another significant color is green and it is associated with the 0 slot.
  • Every bet is played on a roulette table layout, which comprises 12 horizontal rows and 3 vertical columns.

One can distinguish different segments that dictate the rules of the game.

The segments are:



0 (or 00):

Right above the 1st row (comprising 1, 2 and 3).

Dozen segment:

This column has 3 rows and is meant to divide the table in 3 parts: 1st dozen (1-12), 2nd dozen (13-24) and 3rd dozen (25 to 36).

Column bet segment:

This row has 3 columns (comprising 34, 35 and 36).


Left to the dozen row you can find another row with a specific format.

1-18: low numbers of this game

Even: all even numbers ranging from 0 to 36

B: black numbers on the roulette wheel

R: red numbers on the roulette wheel

Odd: all odd numbers ranging from of 0 to 36

19-36: high numbers of this game

Learn to play the Roulette Wheel

The very first thing to do is to buy chips from the dealer. Every chip equals $1. The dealer will ask you to place your bets and soon after the roulette wheel will be rotated in counterclockwise direction. The ball is launched in the opposite direction. It is a matter of time till the ball settles into a slot. The pocket (slot) containing the ball will determine all the bets placed on the table.

Before actually going to a casino, you must have a basic knowledge on the bets and the tricks involved.

Some roulette bets

There are endless variables during a game: bets can focus on a number, 4 successive numbers, a certain column or a dozen's bet (see above).

Roulette Info

All necessary Roulette Info is possible to find here. Do not be shy and afraid - just try one of the world's favorite roulette games. Usuful tips and strategies will help you to succeed when playing roulette in both online and land casinos!

Roulette Systems

More interesting and really useful facts about various roulette systems: how to use them and win every bet. Learn to manage your roulette bankroll wisely and place the bets that will definitely win with each spin. Rare betting strategies for roulette explained.

Roulette Game

Anyway, do not forget that roulette game is the game of luck: systems do not work if you do not believe in them.