How does blackjack work
Last updated: April 1, 2026
Key Facts
- The goal is to reach 21 or get closer to 21 than the dealer without exceeding it (called 'busting')
- A 'blackjack' or 'natural' is an ace and a 10-value card dealt as the first two cards, worth 21 immediately
- Players can hit (take another card), stand (keep their current hand), double down (double their bet for one more card), or split (divide a pair into two separate hands)
- The dealer must follow strict rules: typically hitting on 16 or less and standing on 17 or higher
- Blackjack pays 3:2 (1.5 times the bet), while other winning hands typically pay 1:1 (equal to the bet)
Overview
Blackjack is one of the most popular casino card games in the world. The game combines luck and strategy, as players make decisions about how to play their hands based on their cards and the dealer's visible card. It is played with one or more standard 52-card decks.
Card Values and Hand Totals
In blackjack, each card has a specific value. Number cards (2-10) are worth their face value, face cards (Jack, Queen, King) are worth 10, and aces are worth either 1 or 11 depending on which value is better for the hand. A player can choose whether their ace counts as 1 or 11. For example, an ace and a 6 can total either 7 or 17, and the player would typically count it as 17 if they haven't taken other cards.
Game Flow and Player Actions
The dealer gives each player and themselves two cards. One of the dealer's cards is face-up (visible to all players) and one is face-down. Players then decide their actions in order:
- Hit: Take another card from the dealer
- Stand: Keep the current hand total and end your turn
- Double Down: Double your original bet and receive exactly one more card
- Split: If you have two cards of the same value, divide them into two separate hands
- Surrender: Forfeit half your bet and end your hand (not available in all games)
Dealer Rules
The dealer plays last and follows strict rules with no choices. The dealer must hit on 16 or less and stand on 17 or higher. Some casinos use 'soft 17' rules where the dealer hits on a 17 that includes an ace counted as 11. The dealer has no discretion and must follow these rules regardless of the situation.
Winning and Payouts
If the dealer busts (goes over 21) and the player doesn't, the player wins. If both the player and dealer have 21, it's a tie called a 'push' and the player's bet is returned. A blackjack (ace plus 10-value card on the first two cards) typically pays 3:2 odds, while other winning hands pay 1:1.
Related Questions
What is the best strategy for playing blackjack?
Basic blackjack strategy involves memorized decisions for each possible hand based on the dealer's up card. It tells you when to hit, stand, double down, or split, based on mathematical probability and is designed to minimize the house edge.
What does 'soft' and 'hard' mean in blackjack?
A 'soft' hand contains an ace that is being counted as 11 without the hand busting. A 'hard' hand either has no ace or contains an ace that must be counted as 1. Soft hands offer more flexibility in strategy.
What is card counting in blackjack?
Card counting is a strategy where players track which cards have been dealt to calculate the probability of future cards. While not illegal, casinos prohibit it and can ban players they suspect of counting cards.
Sources
- Wikipedia - Blackjack CC-BY-SA-4.0
- National Council on Problem Gambling Official