What Is Blackjack?
Blackjack is one of the most widely played card games in both land-based and online casinos. Its enduring popularity comes from a combination of simple rules, fast-paced gameplay, and the fact that informed decisions can genuinely affect outcomes — something few casino games offer.
The objective is straightforward: beat the dealer by getting a hand value closer to 21 than theirs, without going over (known as "busting").
Card Values
- Number cards (2–10): Worth their face value.
- Face cards (Jack, Queen, King): Each worth 10.
- Ace: Worth 1 or 11, whichever is more beneficial to the hand.
A hand containing an Ace counted as 11 is called a soft hand. For example, Ace + 6 = a soft 17.
How a Round Is Played
- Players place their bets before any cards are dealt.
- The dealer deals two cards to each player and two to themselves — one dealer card is face up, one is face down (the "hole card").
- Players then decide their action based on their hand and the dealer's visible card.
- Once all players have acted, the dealer reveals their hole card and must follow fixed rules (usually hitting until reaching 17 or more).
- Hands are compared and winning bets are paid out.
Player Decisions Explained
| Action | What It Means |
|---|---|
| Hit | Take another card from the dealer. |
| Stand | Keep your current hand and end your turn. |
| Double Down | Double your original bet and receive exactly one more card. |
| Split | When dealt two matching cards, split them into two separate hands (each with its own bet). |
| Surrender | Fold your hand and reclaim half your bet (available in some variants). |
| Insurance | A side bet offered when the dealer shows an Ace — generally not recommended due to poor odds. |
Understanding Basic Strategy
Basic strategy is a mathematically derived set of decisions that tells you the optimal action for every possible combination of your hand and the dealer's upcard. Following it consistently reduces the house edge to its lowest possible level.
Here are some core basic strategy principles:
- Always stand on hard 17 or higher.
- Always hit on hard 8 or lower.
- Double down on 11 when the dealer shows 2–10.
- Always split Aces and 8s.
- Never split 10s or 5s.
- Stand on hard 12–16 when the dealer shows 4, 5, or 6 (dealer is likely to bust).
- Hit on hard 12–16 when the dealer shows 7 or higher.
Basic strategy charts are freely available and are legal to use at most casinos — including online. Using one is the single most impactful thing a blackjack player can do.
Common Blackjack Variants
Online casinos offer many variations of blackjack. Understanding the key differences helps you pick the best game:
- Classic Blackjack: The standard version with familiar rules.
- European Blackjack: Dealer doesn't check for blackjack until all player actions are complete.
- Blackjack Switch: Players are dealt two hands and can swap the top cards between them.
- Pontoon: British variant with slightly different terminology and rules.
House Edge in Blackjack
With basic strategy applied, blackjack typically has a house edge of around 0.5%, making it one of the lowest house-edge games in any casino. Without strategy, that edge rises significantly. This is why learning basic strategy is so valuable for any serious blackjack player.