Why Do Some Roulette Wheels Have a Double Zero?

In American roulette, there are two green slots: 0 and 00. The extra slot increases the house edge by about 5.26%. In European roulette, there’s just a single green slot: 0.

The house edge is cut in half, to about 2.63%.

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When you bet on a single number in American roulette, your odds of winning are 37 to 1. The extra slot lowers your odds of winning, but it doesn’t change the payout.

PRO TIP:Roulette wheels with a double zero (00) give the house an extra advantage. The house edge is increased to 5.26% on a double zero wheel, rather than the 2.7% on a single zero wheel. If you’re playing roulette, it’s best to look for a single zero wheel to give you better odds of winning.

You’ll still get 35 to 1 on your money.

The double zero also has an effect on other bets. For example, the odds of winning a red/black bet are 18/37 in American roulette and 18/37 in European roulette. But the payouts are different.

In American roulette, you’ll get an even money payout (1 to 1). But in European roulette, you’ll get a 17 to 1 payout.

So why do casinos use a double zero wheel? The answer is simple: because they can make more money with it. The extra slot increases the house edge and gives the casino a better chance of winning.