You’ve heard it time and time again – the fewer decks used in a game of blackjack, the better your odds.

1. Single Deck Blackjack
2. How Many Decks Of Cards Are Used In Blackjack
3. How Many Decks Of Cards Do Blackjack
4. How Many Decks Of Cards Are Used In Blackjack In A Casino
5. How Many Decks Of Cards Do They Use In Blackjack

Have you ever stopped to wonder why this is?

. A player is credited with a win if they are able to gather a total of 6 cards. The cards should not add up to any sum above 21. This is referred to as the “Six Card Charlie’’. 8 decks of blackjack cards are used. Online Blackjack games are quite similar to their brick-and-mortar counterparts. As such, most make use of multiple card decks, though some use single card decks. However, the fact that an online Blackjack game in an online casino is using a single card deck does not mean that the advantage goes to the player. On the contrary, regardless of the. If you’re serious about blackjack card counting, you then’ll have many techniques to select from. Each system varies based mostly on its diploma of accuracy and complexity.

I got the inspiration to write this blog post after fielding a question from a buddy of mine who isn’t much of a gambler. He’s preparing to head to a bachelor party in Vegas and started to study blackjack. He noticed that everyone says “fewer decks is better,” but didn’t understand. After all, he said, the overall proportion of each rank of card is the same no matter how many decks are shuffled together.

This post is all about deck size and blackjack. We’ll cover why fewer decks is better, in detail, and include a little bit of math where appropriate.

Fewer Decks = More Blackjacks

The main reason we say that fewer decks is better for players is that, in each deck, exactly 1/13^th of all cards are Aces.

Yes, my friend was right, the initial proportions of card values to one another is equal no matter how many decks you play with. The reason you’ll be dealt more blackjacks with a smaller shoe is that the impact of removing a card from the game is greater in a game with fewer overall cards.

Odds of Drawing Blackjack in a Single-Deck Game

Let’s start by getting an idea of how often a player will draw blackjack in a single-deck game. To get to the probability of drawing a blackjack from a one-deck shoe, all you have to do is multiply the odds of drawing an Ace by the odds of drawing any card with a value of ten points. We know that a single deck of fifty-two cards contains four Aces and sixteen cards worth ten points – four tens, four Jacks, four Queens, and four Kings.

That means probability of drawing any Ace is 4/52, which we simplify to 1/13. Once you’ve drawn your Ace, the probability of then drawing any ten-point card is 16/51. Notice anything about those two numbers? The first probability is based on a fifty-two card deck, but since you’ve already drawn a card, you have to now work out the probability of drawing one of sixteen ten-point cards from a deck of fifty-one.

This change in the divisor is the reason why a smaller number of decks is advantageous to the blackjack player, and gives the house a distinct disadvantage.

If you want to get an accurate number of the likelihood of drawing a blackjack from a single-deck shoe, you actually need to double your result, since you could technically get a blackjack with either a ten-point card OR an Ace at the start.

All told, the probability of drawing a blackjack from a single deck shoe is 4.83%. That’s the probability of drawing an Ace (1/13) multiplied by the probability of drawing any ten-point card (16/51), multiplied by two.

Odds of Drawing Blackjack in a Two-Deck Game

To give you an idea of the statistical difference between one and two decks, let’s look at the odds of drawing a blackjack when you start with 104 cards instead of 52.

The probability of drawing any Ace from a two-deck shoe is 8/104. The probability of then drawing any ten-point card from the same shoe is 32/103. When we multiply those two together, then double the result, we get 4.78%.

Odds of drawing a blackjack in a one-deck shoe = 4.83%. Odds of drawing a blackjack in a two-deck shoe = 4.78%. By adding a deck (and not changing any rules of the game), the casino has decreased your likelihood of drawing a blackjack by 0.05%. Remember, though, that each one of those lost blackjacks would have been a win under standard casino rules at a 3:2 payout. Losing those 3:2 payouts makes a big impact on your bottom line, and on the casino’s.

Why do Double Downs Work Better with Fewer Decks?

If you’re following along closely, you’ve probably already figured out that the same phenomenon that makes blackjacks more likely with fewer decks probably also affects the likelihood of a successful Double Down. If you double your initial hand (6 and 5), you’ll be more likely to draw a face card to form a total of 21 if the game uses fewer decks.

Here’s where things get tricky – don’t forget that your dealer also benefits from these changes at lower deck counts. It’s not just the player that has a shot at more blackjacks. The reason why this fact doesn’t impact the game as much as it might is that players win 3:2 for blackjack, while the house wins just even money. Also, the dealer can’t Double Down, while the player can. That additional doubled-win gives the player a bigger advantage than the dealer.

Conclusion

All things being equal, meaning all rules being pretty much identical, a blackjack game that uses a smaller number of decks to build the shoe is advantageous for the player. One situation I’d warn blackjack players about – casinos that offer single-deck blackjack with a 6:5 or even 1:1 payout for player blackjack. The implication is that the casino is only willing to give you those improved single-deck odds in exchange for a reduced penalty at the point of player blackjack. In the case of games that don’t pay the traditional 3:2, don’t play them just because of the appeal of the single deck setup.

You’ve likely seen movies where card counters make big profits. Although such film scenes are unrealistic, they at least show that skilled counters do win money.

But one thing you never see in these movies is somebody sitting at home and making thousands of dollars through online blackjack. In fact, it’s widely assumed that card counting doesn’t work at online casinos.

You may be surprised to find out, though, that card counting actually is possible at gaming sites. However, the real question is if it’s profitable.

I’m going to cover the stigma against online card counting and why it’s feasible in certain cases. I’ll finish by discussing if the profits make it worth your time to be an internet card counter.

What Are the Basics of Card Counting?

The very essence of card counting is to determine when you have a stronger chance of getting a natural blackjack. Assuming you’re playing at a table with favorite rules, then you’ll receive a 3:2 payout on your original bet (some tables only offer 6:5).

Your chances of getting a natural blackjack increase greatly when the shoe has a larger percentage of aces and 10s compared to other card values. You’ll theoretically gain more value by increasing your bet size at this point.

Of course, you won’t naturally know when these situations are present. But card counting gives you a tool for figuring out when the shoe is rich in aces and 10s.

The Hi-Lo offers a happy medium between accuracy and ease of use. But the jest of the Hi-Lo is that you assign values to each card that comes out. Here are the point values for each type of card:

• Aces, face cards, and 10s (high cards) = -1
• 7, 8, and 9 = 0 (neutral)
• 2, 3, 4, 5, and 6 (low cards) = +1

You want fewer low cards in the shoe, which is why your positive count increases when they come out.

The Hi-Lo also calls on you to account for how many decks are left in a shoe with a “true count.” You do this by dividing your “running count” by the estimated amount of remaining decks.

Here’s an example:

• Your running count is +6.
• You estimate that two decks are left.
• 6 / 2 = +3 true count

You can increase your bet size as the positive true count grows. A simple way to do this is by:

• Flat betting with a count of 0 or +1.
• Increasing your minimum bet 5x with a count of +2.
• Increasing your minimum bet 10x with a count of +3 or higher.

Why Online Card Counting Usually Doesn’t Work

One more aspect to card counting in blackjack that I haven’t discussed is deck penetration. This term refers to how many decks a casino deals before reshuffling the shoe.

Here’s an example:

• You’re playing at a table with an eight-deck shoe.
• Five of the eight decks have been dealt.
• 5 / 8 = 62.5% deck penetration

You want higher deck penetration, because this allows you to place bigger bets with more confidence. A +2 or +3 true count is much more accurate when only one deck remains, versus five or six.

Of course, many casinos reshuffle before this point in order to thwart card counters.

Other casinos allow more deck penetration, because they don’t want to slow down games by constantly reshuffling. They figure that lost hands are most costly than simply giving a few counters a bigger advantage.

Online casinos don’t have to worry about lost hands when reshuffling decks. Their software-based (a.k.a. virtual) tables can automatically reshuffle a shoe with no time wasted.

Online gaming providers program their blackjack games to reshuffle with very little deck penetration. You have absolutely no chance to gain an advantage in these cases.

Of course, you could slightly improve your odds if a casino allowed, say, 25% penetration. But this amount isn’t enough to count with any confidence and swing the odds in your favor.

The low deck penetration in online blackjack games is why card counting doesn’t work at virtual tables.

Some Live Dealer Casinos Allow More Deck Penetration

Many online casinos offer live dealer blackjack, which features a human dealer and real cards. These tables operate just like a normal land-based casino would, with the exception that the action is being streamed through your internet device.

Assuming the conditions were perfect, live blackjack would be the best way to count cards. After all, you could sit at home and count without drawing as much suspicion from pit bosses and floor supervisors.

Of course, online casinos aren’t dumb. They know their live tables are susceptible to being beaten through card counting.

Dealers are instructed to shuffle shoes before too much deck penetration is allowed. They’re not going to deal through 75% of the shoe and give you an easy chance to count.

Single Deck Blackjack

Some live dealer casino games allow up to 50% deck penetration before reshuffling. You can theoretically gain a tiny advantage in these situations.

I mentioned earlier that at least 75% penetration is ideal. But 50% is just enough to where you can earn a little money over time.

You can visit different live dealer casinos and watch their games to figure out the deck penetration. Take notes on the different percentages in order to find sites that are more susceptible to counting.

What Is the Profitability of Live Dealer Card Counting?

The problem with counting in the aforementioned live blackjack games is that it’s just not very profitable. At best, you’re looking at earning a small amount of profits over time.

You also need to be able to use a large “spread,” which is the distance from the minimum bet to your highest wager.

Here’s an example:

How Many Decks Of Cards Are Used In Blackjack

• You’re playing at a table with $5 minimum bets.
• You increase your wager to $75 with a true count of +3.
• 75 / 5 = 15
• Your bet spread is 1-15.

How Many Decks Of Cards Do Blackjack

Pro counters generally use between a 1-10 and 1-15 bet spread. But they must be careful, because such large spreads are a telltale sign of a counter.

You need to thoroughly research which land-based casinos allow this type of action without immediately tossing you. Some Las Vegas casinos are more lenient than others.

Gaming sites with live blackjack are generally very lenient with bet spreads. After all, they’re not allowing enough penetration to where you’ll gain a big advantage.

But you need around a 1-30 spread to get an edge with just 50% penetration. If the table minimum bet were $5, for example, you’d be betting $150 with a +3 true count.

Some online casinos might allow this. Others may eventually ban you if they monitor your play and deem you to be a bad customer.

You can of course “wong in,” which involves counting while sitting out and entering games at favorable points. “Wonging” prevents you from having to play unprofitable hands until detecting a positive count.

Another problem is that you’ll have to dedicate a lot of time for such little payoff. Online card counting is nothing more than a low-paying hobby in the long run.

Conclusion

Counting cards at live dealer casinos can result in minimum profits with 50% deck penetration. But you’ll never make any serious money with this practice.

You might be lucky to earn a few dollars an hour, even with a 1-30 bet spread and wonging. These tiny profits hardly seem worth the effort.

How Many Decks Of Cards Are Used In Blackjack In A Casino

Live dealer counting can be a fun hobby. It’s also a nice way to prepare for counting cards at a brick and mortar venue.

Just be aware that you won’t be able to use such large spreads at a land-based casino. You might even attract suspicion at some live dealer tables for doing so.

Also, wonging isn’t permitted at most brick and mortar establishments. Casinos have a “no mid-shoe entry” rule to prevent this from happening.

How Many Decks Of Cards Do They Use In Blackjack

Nevertheless, land-based casinos are better for profitable card counting. Live dealer sites, meanwhile, are just fun places to hone your counting skills while potentially earning a little money.