Roulette wheel dimensions vary depending on the type of roulette game being played. The standard American roulette wheel has a diameter of 32 inches （81 cm）, while the European roulette wheel typically measures 31.5 inches （80 cm） in diameter. The wheel is divided into numbered pockets, with American wheels having 38 pockets （1-36, 0, and 00） and European wheels having 37 pockets （1-36 and 0）. 
The height of a roulette wheel from the table surface is usually between 10 to 12 inches （25-30 cm）. The wheel itself is made of solid wood or synthetic material and rotates on a precision bearing system. The ball track, where the ball travels before landing in a pocket, has a diameter of approximately 26-28 inches （66-71 cm） for standard wheels.
Casino-grade roulette wheels must meet strict regulatory standards for dimensions and balance to ensure fair play. The wheel must be perfectly level and the pockets evenly spaced to prevent bias. Professional wheels used in major casinos often have additional features like diamond-shaped frets and deeper pockets to ensure random ball movement. |
