Blackjack continues to be one of the most popular card games in the world, and nowadays it is a staple game at thousands of casinos.

The ease of play, simple rules and general accessibility mean that new players can quickly get to grips with the game, and this has contributed to its popularity at both online casinos and brick-and-mortar venues.

However, while the game is far more simple than some other casino games, such as poker, there are still some rules and actions within the game that might require more explanation for less seasoned players: one of these is the blackjack double down.

The double down is a technique in which players can double their original bet and only draw one card. It can be a useful strategy within each hand, but it requires some experience of the game and some initial explanation.

To that end, we have put together a guide to the double down in blackjack, including tips on how to double down, when to double down in blackjack, when to avoid doubling down on blackjack sites, and relevant blackjack double down rules.

What is doubling down in blackjack?

Doubling down involves doubling your original bet after receiving your first two cards and then receiving just one additional card.

Players can double down only after their first two cards are dealt, and they cannot hit again. Not all hands are eligible for doubling down; for example, you can’t double down if you are dealt a blackjack.

When to double down in blackjack

Best hands for doubling down

There a few ideal situations for when to double down in blackjack – these are based on hand values and dealer upcards. Some scenarios to look out for on gambling sites include:

When your hand totals 11: If you’re showing an 11, one more card could bring you to blackjack, while there is also no possibiity of going bust. 

When you have a hard 9 or 10 (Dealer shows 2-6): A hard hand is a hand in which you don’t have an ace. If the dealer is showing a lower card when you have a 9 or 10, it is a good time to double down as you’ve put yourself in a good position to win.

When you have a soft 16, 17, or 18 (Dealer shows 3-6): A soft hand is a hand in which you do have an ace. If the dealer is showing a lower card again, you have a better chance of hitting blackjack.

How the dealer’s cards influence your decision

Remember that the dealer’s upcard plays a crucial role in deciding when to double down. Weak dealer cards (which are generally regarded as anything between 2 and 6) provide the best opportunities for players to double down successfully.

When not to double down in blackjack

Hands to avoid doubling down on

In this section, we have detailed some scenarios in which players should not double down. Doubling down should be avoided when:

The dealer shows an ace: This is because there is a high chance of the dealer getting a blackjack.

The dealer has a 10-value card: This is because the dealer is then likely to score near 21.

Your hand totals more than 11: If your hand totals over 11, there is a high risk of busting.

Why caution is important

Overall, players should avoid doubling down if they aren’t completely sure of the odds and ramifications. This strategy should be reserved for situations when the odds are clearly in the player’s favour, and inexperienced players may want to avoid using the double down blackjack strategy until they are a little more experienced.

How to double down in blackjack

If you want to signal your intention to double down in a live casino, then place an equal bet beside your original bet by putting the extra chips next to your original bet, and then extend one finger.

In online blackjack, there’s usually a double button you can press to double down.

Betting rules for doubling down

It helps to remember that there are several blackjack double down rules for placing an additional bet. Different casinos may have slight variations in the rules, but we are discussing the most common rules you’ll find at most online casino sites.

Of course, the main rule is that once your next card is drawn, you’ll be forced to stand on whatever your total is.

In some games, you may be able to double down on any starting total. However, different games may restrict players to doubling down on totals of 10 and 11 only.

Common mistakes when doubling down

Overconfidence in bad hands

Players are warned against doubling down too often or in the wrong situations, especially when the dealer has a strong hand (for example, an ace or 10).

Misunderstanding soft and hard hands

In blackjack, a hard hand is a hand that has any two cards without an Ace. This could include pairs.

A soft hand is a hand with two cards, at least one of which is an Ace.

This distinction is essential when deciding whether to double down, as soft hands have two possible values depending on whether Ace is high or low. For example, Ace and 6 could be seven or 16. In addition, rules require the dealer to stick on soft 17 and take a card on 16.

Blackjack doubling down strategy: Best practices

Maximise your advantage with the dealer’s weak hand

It is important to double down when the dealer is showing weak cards (2-6), as they are more likely to bust.

Avoid doubling down when the dealer has a strong hand

Remember that it is risky to double down when the dealer is showing a strong card, such as a 10 or ace.

Practice makes perfect

Players should do their best to practise blackjack strategies, including doubling down, and can do so using free online blackjack games at established and new casino sites. This means you can build your skills without financial risk, and can then jump into real-money online games when they feel they have enough experience.

Summary: Doubling down in blackjack

The double down is a key part of blackjack strategy and is something that should be learned and utilised by anyone who plays the game.

Overall, understanding the dealer’s hand and mastering this technique can significantly improve a player’s chances of success in blackjack.

To that end, it is vitally important to learn and memorise when to double down in blackjack and when not to.

Remember, as a good baseline blackjack double down strategy, it is a good idea to double down when your hand totals 11, when you have a hard 9 or 10 (and the dealer shows 2-6), or when you have a soft 16, 17, or 18 (and the dealer shows 3-6). All of these situations are among the best times to double down in blackjack.

At the same time, remember to avoid the double down when the dealer shows an ace or has a 10-value card, or when your own hand totals more than 11.

In addition, remember to avoid common mistakes when doubling down, including having overconfidence in bad hands and not knowing the difference between hard and soft hands.

Finally, remember that practice makes perfect, and players should always gamble responsibly.

Responsible gambling

When playing blackjack online, it is vital that you remember to gamble responsibly. It is an easy game to lose track of, and losses can quickly mount, but remember to never chase any of these losses.

Gambling is a form of entertainment, not a way to make money, and it often helps to make a budget from the moment you start playing. As a general rule, remember to never wager more than you can afford to lose.

If you need to, you can use responsible gambling tools on casino apps when you play. They include self-assessment calculators, deposit limits, loss limits, self-exclusion and time-outs.

Should you wish to seek help for gambling-related issues, there are several charities and healthcare providers who offer support and information:

Frequently asked questions about doubling down in blackjack

Can I double down after splitting?

Most casinos do not allow doubling down after splitting, though some do, so players should check the specific rules of the table. In addition, the option to double down after splitting may simply depend on the variant of the game.

Should I always double down on 11?

For most players, especially those who are new to the game, doubling down on 11 is usually a strong move. However, do not double down when the dealer shows an ace or a 10, and do not double down if your cards total more than 11.

Can I double down after hitting?

Players cannot double down after hitting, as most casinos will restricted the option to double down to when a player is on their first two cards. There are some variations of blackjack where it is possible to double down afte hitting if the card total is between 9 and 11, but these are rare.

Can you earn a casino bonus playing blackjack?

Some online casinos will allow you to work through the wagering requirements of a casino bonus by playing blackjack, but check the terms and conditions of the offer as a handful don’t count it towards any wagering.

Can you convert free spins into a blackjack bonus?

No. Most online casinos will not let you convert a free spins bonus or any type, be it a free spins no deposit bonus or one you’ve had to wager to earn. Free spins are reserved for use on online slots.

What’s the best payment method for blackjack?

Online casinos have a wide choice of banking options. Nearly every blackjack site accepts debit card and bank transfer, but it isn’t hard to find a PayPal casino, Apple Pay casino or pay by mobile casino if those are your preferred payment methods.

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