The Double Down Blackjack Strategy: Maximizing Your Chances of Winning

Blackjack is one of the most popular casino games worldwide, known for its simplicity and strategic gameplay. While there are various strategies that players can employ to increase their odds of winning, one technique that stands out is the double down strategy. In this article, we will explore the ins and outs of the double down blackjack strategy, its benefits, and how to use it effectively.

What is Double Down in Blackjack?

Double down is a blackjack strategy that allows players to double their initial bet after receiving their first two cards. In return, the player receives only one additional card. This strategy is particularly advantageous when the player believes that their hand has a high probability of winning against the dealer’s hand.

When to Double Down

Knowing when to double down is crucial to maximize your chances of winning. Here are some scenarios where doubling down is recommended:

  • When your initial hand totals 9, 10, or 11, and the dealer’s upcard is 3, 4, 5, or 6. In this situation, the dealer has a higher chance of busting, making it favorable for the player to double down.
  • When you have a soft hand (a hand that contains an Ace) and the dealer’s upcard is 5 or 6. This scenario gives you a good opportunity to improve your hand without the risk of busting.
  • When you have a hard hand (a hand without an Ace) and the dealer’s upcard is 2, 3, 4, 5, or 6. Similar to the first scenario, the dealer’s chances of busting are higher, making it advantageous to double down.

Calculating the Expected Value

Before deciding to double down, it is essential to calculate the expected value (EV) of the move. The expected value is a statistical measure that represents the average outcome of a particular action over the long run. In blackjack, the EV of doubling down can be positive or negative, depending on the specific scenario.

For example, let’s say you have a total of 11 and the dealer’s upcard is a 5. By doubling down, you have a high chance of getting a 10-value card, resulting in a strong hand of 21. In this case, the EV of doubling down is positive, indicating that it is a profitable move in the long run.

On the other hand, if you have a total of 12 and the dealer’s upcard is a 10, doubling down would be a risky move. The chances of getting a low-value card and busting are relatively high, resulting in a negative EV.

Advantages of Double Down

The double down strategy offers several advantages to blackjack players:

  • Increased Potential Winnings: By doubling your bet, you have the opportunity to win twice as much if your hand beats the dealer’s hand.
  • Capitalizing on Favorable Situations: When the dealer’s upcard is weak or when you have a strong hand, doubling down allows you to take full advantage of these situations.
  • Shifting the Odds in Your Favor: When used strategically, the double down strategy can help shift the odds in your favor, increasing your overall chances of winning.

Common Mistakes to Avoid

While the double down strategy can be highly effective, it is important to avoid common mistakes that can lead to unnecessary losses:

  • Ignoring Basic Strategy: The double down strategy should be used in conjunction with basic blackjack strategy. Failing to follow basic strategy guidelines can significantly reduce the effectiveness of the double down strategy.
  • Overusing the Double Down: Doubling down on every favorable situation can be tempting, but it is important to exercise restraint. Overusing the double down strategy can lead to excessive losses if luck is not on your side.
  • Not Considering the Dealer’s Upcard: The dealer’s upcard plays a crucial role in determining whether to double down. Ignoring the dealer’s upcard can result in poor decision-making and unnecessary losses.


1. Can I double down after splitting?

Yes, most casinos allow players to double down after splitting their initial hand. This can be a powerful move, especially when the player has split a pair of Aces or 8s.

2. Is it possible to double down on any hand?

No, you can only double down on your first two cards. Once you have received additional cards, the option to double down is no longer available.

3. Should I always double down on 11?

While doubling down on 11 is generally a good move, it is important to consider the dealer’s upcard. If the dealer’s upcard is an Ace, it is advisable to hit rather than double down.

4. Can the double down strategy guarantee a win?

No strategy can guarantee a win in blackjack, including the double down strategy. However, when used correctly and in conjunction with basic strategy, the double down strategy can significantly increase your chances of winning.

5. Is the double down strategy suitable for all blackjack variations?

The double down strategy is applicable to most blackjack variations, including traditional blackjack and online blackjack. However, it is important to familiarize yourself with the specific rules of the game you are playing, as some variations may have slight variations in the double down rules.


The double down strategy is a powerful tool in a blackjack player’s arsenal. By understanding when to double down and calculating the expected value of the move, players can significantly increase their chances of winning. However, it is important to use the double down strategy in conjunction with basic blackjack strategy and to avoid common mistakes that can lead to unnecessary losses. With practice and strategic decision-making, the double down strategy can be a valuable asset in your quest for blackjack success.

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