- 27 Sep 2025
Card counting in blackjack has long been associated with gaining an edge over the house. It’s a technique that helps players keep track of high and low cards, improving their odds of making better decisions at the table. While card counting isn’t illegal, it is frowned upon in many casinos, and those caught may be asked to leave. If you’re wondering how to count cards in blackjack, this article will guide you through the basics and provide you with tips to get started.
To understand the rules of the game before diving into card counting, check out this helpful guide on How to Play Blackjack.
Card counting is a strategy used in blackjack to track the ratio of high cards (like tens, face cards, and aces) to low cards (such as twos, threes, fours, fives, and sixes) that remain in the deck. By doing this, players can make more informed decisions on when to hit, stand, or bet more aggressively. The goal is to determine when the deck is “hot” or in your favor, giving you an advantage over the house.
Card counting might sound complicated, but the concept is actually quite simple. Here’s a step-by-step breakdown of how you can start counting cards:
To begin counting cards, you must assign a value to each card that is dealt. Most card counting strategies follow the simple Hi-Lo system, where:
As each card is dealt, you’ll either add, subtract, or do nothing to the running count based on the card’s value.
As cards are dealt in each round, you’ll mentally track the running count by adding or subtracting based on the value of the cards. For example, if a 5 is dealt (+1), followed by a 10 (-1), and then a 3 (+1), the running count would be +1 overall.
The idea is that the higher the running count, the more high-value cards are still in the deck, increasing your chances of getting a blackjack or winning a hand.
In games with multiple decks, you need to adjust the running count to a “true count” to get an accurate idea of how favorable the deck is. To do this, divide the running count by the number of decks remaining in the shoe. For example, if the running count is +6 and there are three decks left, the true count is +2.
The true count helps you make more informed betting decisions because it accounts for the number of decks in play.
Once you have the true count, you can adjust your betting strategy. If the true count is high, it’s a good time to increase your bets because there are more high cards left in the deck, which is favorable for the player. Conversely, if the true count is low, you may want to reduce your bet or play conservatively.
Card counting requires practice and patience. Start by practicing at home or using online simulators to get used to keeping a running count and calculating the true count. It’s essential to be able to count cards quickly and without drawing attention to yourself in a live casino setting.
For mastering blackjack strategies beyond card counting, you can learn more about advanced techniques in this article: Master Blackjack with Basic Strategy.
Card counting is not illegal. However, casinos are private establishments and reserve the right to remove players who are suspected of counting cards. Casinos monitor for card counters by observing betting patterns and behavior. While it’s not against the law, it’s crucial to remain discreet if you decide to count cards in a casino.
Card counting can give players a slight advantage over the house by helping them predict favorable situations to bet more aggressively. Some of the benefits include:
While card counting offers advantages, it’s not without its challenges:
Card counting in blackjack can give players an edge by allowing them to make informed decisions based on the remaining cards in the deck. While it’s not an easy skill to master, with practice and patience, it can be a useful tool for improving your chances of winning. Keep in mind that casinos frown upon card counting, so if you decide to use this strategy, it’s important to be discreet.
By combining card counting with other strategic approaches, you’ll be better equipped to take on the blackjack table and make more informed decisions during your game.