Ever noticed that the number of decks in blackjack isn't always the same?
Whether you're new to the game, or just refreshing your knowledge, it’s a detail worth paying attention to. Some blackjack games use a single deck, while others use several—and this can influence how the game plays and the odds involved.
The number of decks can affect your chances, the house edge, and the general flow of each round. By understanding how this works, you’ll be better prepared to choose a game that suits your style and preferences.
In this guide, we’ll explain it all in a clear and simple way, so you know what you might expect, no matter which version of blackjack you decide to play.
How Many Decks Are Used In Blackjack?
In blackjack, the number of decks can vary widely, depending on where and how you play. Some games use a single deck, while others might use as many as eight decks.
At UK casinos, both online and in-person, you might find anything from single-deck to multiple-deck games. Single-deck blackjack, as the name suggests, uses just one deck of cards. However, games with four, six, or eight decks are also common. More decks often mean a higher house edge, which can affect any potential outcomes of your play.
If you're keen to know how many decks a specific blackjack game uses, it may be a good idea to check the game's rules section. Whether you're playing online, or at a physical casino, this information is usually provided so you can make an informed choice before you play.
Why Are Multiple Decks Used In Casino Blackjack?
In many UK casinos, you’ll find blackjack games using multiple decks. But why do casinos choose to add more decks into the mix?
One key reason is to try and reduce any potential card counting. Card counting is a technique some players use to try to keep track of which cards have been dealt. By increasing the number of decks, casinos make this much more challenging.
Multiple decks in a game can also affect the house edge, the advantage the casino holds over players. Generally, more decks tend to increase the house edge. This is because, with more cards in play, the statistical probabilities of drawing certain cards adjust slightly in favour of the house.
Additionally, having more decks allows for more players at the table. This can keep the game moving smoothly and ensure more people can join in. Cards can be dealt continuously without frequent shuffling interruptions.
It’s important to remember that blackjack involves an element of chance. While the number of decks can influence how you approach the game, there are no guaranteed outcomes. The number of decks can shape both the rules and the overall experience, so understanding this can help you make more informed decisions if you play.
Why Does The Number Of Decks Matter In Blackjack?
The number of decks in blackjack isn't just a minor detail; it can shape your entire game experience.
Playing with a single deck means there are 52 cards to work with. This can help to inform your strategic decisions, though it still doesn't predict outcomes.
When you move to a game with six or eight decks, you're dealing with a much larger set of cards—often 312 or 416 in total. With more decks in play, the chances of drawing certain cards change slightly, which can shift the odds a little more in the house's favour.
The house edge in blackjack—essentially the casino's advantage—varies with the number of decks. Single-deck games typically offer a lower house edge, possibly as low as 0.5%, if you follow optimal basic strategy. Six- or eight-deck games tend to increase this edge, especially if the dealer hits on a soft 17, or if the payout for a potential blackjack is lower, like 6:5 instead of the standard 3:2.
Is Multi-Deck Better Than Single Deck?
Whether you prefer a multi-deck or single-deck blackjack game can come down to personal choice. Neither is inherently better; each has its own features.
Single-deck games can sometimes offer a lower house edge, depending on the rules and how you play. If you're following basic strategy, these games may feel a bit more straightforward, though outcomes still rely on chance.
On the other hand, multi-deck games, which may use four to eight decks, offer a different kind of challenge. With more cards in play, the flow of the game can feel more varied, which might influence how you make certain decisions. These games often run more smoothly because the larger number of cards means the dealer doesn’t need to shuffle as often, helping to keep the game moving at a steady pace—especially in busier settings, or online tables with more players.
Remember, blackjack involves both strategy and chance. While strategy can help guide you, outcomes remain unpredictable.
Regardless of deck size, blackjack games can differ in rules and potential payouts, influencing the house edge, which might slightly increase with more decks. For instance, in multi-deck games, casinos might alter rules, such as requiring dealers to hit on a soft 17, which increases the advantage to the house.
Ultimately, your preference may depend on the type of challenge you enjoy and how you approach your play. Understanding these aspects might help enhance your knowledge of the game.
*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.