There are either 37 or 38 numbers on a roulette wheel, depending on the version you’re playing.

Quick Scoop

  • European (and French) roulette wheel: 37 numbers – pockets numbered 0–36, with a single green 0.
  • American roulette wheel: 38 numbers – pockets numbered 0–36, plus an extra green 00.
  • In all standard versions, numbers 1–36 are split into 18 red and 18 black pockets, and the 0 (and 00) are green.

Mini breakdown

  • If you see only “0” in green: you’re on a 37-number European/French wheel.
  • If you see both “0” and “00” in green: you’re on a 38-number American wheel.

So when someone asks “how many numbers on a roulette wheel?”, the precise answer is: 37 numbers on European/French wheels and 38 on American wheels.

TL;DR: European/French roulette = 37 numbers, American roulette = 38 numbers.
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Information gathered from public forums or data available on the internet and portrayed here.