Odds of Hitting Red or Black X Times In a Row In Roulette

When playing roulette, many are curious how often the same colour—red or black—can appear back-to-back. These streaks can seem surprising, but how often do they actually happen?

In this blog post, we’ll go through the real odds of hitting red or black consecutively, look at how these odds are worked out, and what this means if you choose to play. Read on to learn more.

Is Red or Black 50/50?

Many people at the roulette table wonder if betting on red or black is as simple as a 50/50 chance. The wheel might look evenly split between both colours, but that’s not quite true. There is at least one green pocket (zero), which changes the maths.

European roulette wheels have a single green zero. American roulette wheels have a zero and a double zero. These green pockets mean landing on red or black is slightly less than a 50% chance every time you spin.

Because of this, the casino gains what’s known as the house edge—2.70% on European roulette, and 5.26% on American Roulette. Over many spins, this has a real effect. This slightly reduced probability shapes a player’s chances at the table.

How Many Times Has Roulette Hit The Same Colour In a Row?

Stories about roulette hitting the same colour again and again are not uncommon. The most extreme on record was 32 reds in a row, reported to have happened in a US casino in the 1940s.

That being said, it’s important to keep in mind that each spin is a separate event—the wheel does not “remember” past results. Whether you’ve just seen a long streak or not, each spin of red or black has the same odds.

Consecutive Red/Black Roulette Odds

Odds of Red/Black 5 Times In a Row

If you’re wondering what the chances are of hitting red or black five times in a row, the odds can be worked out mathematically:

• For European roulette: About 1 in 35.7 (2.73%), using the calculation (18/37)^5.
• For American roulette: Roughly 1 in 40.9 (2.39%), using (18/38)^5.

Every time you spin, the result is independent. This means, even after four consecutive reds or blacks, the chance for the next spin does not change.

Odds of Red/Black 6 Times In a Row

With six repeat appearances, the odds drop further:

• European roulette: 1 in 74.4 (1.33%)
• American roulette: 1 in 87.5 (1.13%)

As the sequence gets longer, the chance of seeing it happen gets even smaller.

Odds of Red/Black 7 Times In a Row

• European roulette: 1 in 154 (0.65%)
• American roulette: 1 in 186 (0.54%)

At this point, streaks become much less common.

Odds of Red/Black 8 Times In a Row

If you’re looking out for an eight-spin streak, the odds are:

• European roulette: 1 in 318 (0.31%)
• American roulette: 1 in 394 (0.25%)

Odds of Red/Black 9 Times In a Row

The odds now begin to get considerably smaller:

• European Roulette: 1 in 654 (0.15%)
• American Roulette: 1 in 832 (0.12%)

Odds of Red/Black 10 Times In a Row

Here are the probabilities for a ten-colour streak:

• European Roulette: 1 in 1,346 (0.074%)
• American Roulette: 1 in 1,757 (0.057%)

With every added spin, the odds reduce sharply, reflecting just how rare long sequences can be.

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*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these games are subject to change at any time. Game features mentioned may not be available in some jurisdictions.

**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.