Blackjack is a card game played between the player and the dealer. Each player is dealt two cards, and they must decide whether to draw more cards or stand, with the aim of reaching a hand total closer to 21 than the dealer’s without exceeding it.
Unlike most casino games, skill directly influences the outcome. A player who learns the correct strategy can reduce the house edge to well below 1%.
How to Win at Blackjack
You win a hand of blackjack in one of two ways:
- Your hand total is higher than the dealer's, and neither hand has exceeded 21.
- The dealer's hand exceeds 21 (busts), and your hand has not.
If both you and the dealer finish with the same total, the hand is a push, and your stake is returned. If your hand exceeds 21, you bust and lose your stake immediately, regardless of what the dealer does.
Blackjack Card Values
Every card in blackjack has a fixed point value:
- Cards 2 through 10 are worth their face value. (e.g.: 8 = 8)
- Picture cards (Jack, Queen, and King) are each worth 10.
- An Ace is worth 11 or 1, whichever keeps the hand at 21 or below.
Check our dedicated guide to know more about blackjack card values.
Hard Hands and Soft Hands
A hard hand contains no Ace, or contains an Ace that must count as 1 to avoid busting. A soft hand contains an Ace that currently counts as 11 without the hand exceeding 21.
This distinction matters because the correct playing strategy differs between hard and soft totals, even when the numerical total is the same. A hard 16 (for example, 10-6) is played differently from a soft 16 (Ace-5).
What Is a Blackjack (Natural)?
A blackjack, also called a natural, is a two-card hand totalling 21: an Ace plus any 10-value card. A blackjack beats any other 21 and pays 3 to 2, provided the dealer doesn't also hold a blackjack, in which case the hand is a push.
Always play at tables that pay 3 to 2 for blackjack. Tables paying 6 to 5 significantly increase the house edge against you.
How a Round of Blackjack Is Played
A standard blackjack table seats up to seven players. Each round follows this sequence:
- Players place their bets on their designated betting spot before cards are dealt.
- The dealer deals two face-up cards to each player and two cards to themselves, one face-up and one face-down.
- Each player acts on their hand in turn, choosing from the available playing options.
- The dealer reveals their face-down card and plays their hand according to fixed rules.
- The dealer pays winning hands and collects losing bets.
Blackjack Dealer Rules
The dealer has no playing discretion. Their hand plays out according to fixed rules that apply regardless of what players hold:
- The dealer must hit on any total of 16 or less.
- The dealer must stand on any total of 17 through 21.
- In some variants, the dealer hits on soft 17. This rule is displayed on the table and is slightly more favourable to the house.
Blackjack Playing Options
Once you've received your two cards, you have up to five playing options, depending on house rules and your hand.
Stand
You're satisfied with your hand total. No further cards are drawn (wave your hand flat over the cards to stand).
Hit
You take an additional card. You can continue hitting until you decide to stand or bust (tap the table or point at your cards).
Double Down
You double your original bet and receive exactly one additional card, with no further cards permitted. This option is available only on your first two cards. Double down when the rules and your hand total strongly favour it, typically on hard 9, 10, or 11 against a weak dealer up-card (place a second stack of chips next to your original bet).
For a full breakdown of when and how to use this move, see our blackjack double down guide.
Split
When your first two cards are a matching pair, you can split them into two separate hands by placing a second bet equal to your original wager. Each hand then plays independently (place a second stack of chips next to your original bet).
- Always split Aces. Two soft hands, each starting from 11, is a strong position.
- Never split 10-value cards. A total of 20 is already one of the strongest hands in the game.
- When splitting Aces, most house rules limit you to one additional card per hand.
Surrender
Where available, surrender allows you to fold your two-card hand before drawing any additional cards (draw a line behind your bet with your index finger).
You forfeit half your stake rather than playing the hand out. Surrender is available only after the dealer has checked for blackjack. An early surrender option, available before the dealer checks, is rare.
Blackjack Side Bets: Insurance and Even Money
Insurance
If the dealer's face-up card is an Ace, you can place an insurance side bet worth up to half your original stake. If the dealer's face-down card is a 10-value card, the insurance bet pays 2 to 1. Insurance carries a high house edge and is generally not recommended for most players.
Even Money
If you hold a blackjack and the dealer shows an Ace, you can take even money, a guaranteed 1-to-1 payout, before the dealer checks their face-down card. Taking even money is mathematically equivalent to taking insurance when you have a blackjack and carries the same strategic disadvantage.
How the House Edge Works in Blackjack
The house edge in blackjack comes from the double-bust rule: players must act first, so if you bust, you lose your stake immediately, even if the dealer subsequently busts on the same round.
On a single-deck game with no strategy applied, the base house edge is approximately 8%. Correct decisions across hitting, standing, doubling, and splitting chip away at that figure. With full basic strategy applied, the house edge drops to approximately 0.2% or lower, depending on the specific table rules.
Basic Strategy in Blackjack
Basic blackjack strategy is the mathematically optimal set of playing decisions for every possible hand combination against every possible dealer up-card. It was first established in 1956 and has been refined with computer analysis ever since.
The basic strategy is presented as a chart covering every hand you can be dealt (hard totals, soft totals, and pairs) against every possible dealer up-card from 2 through Ace. Each cell in the chart tells you the single best decision: stand, hit, double down, split, or surrender.
Two examples of how it works in practice: hard 11 against a dealer's 6 is a double down, because the dealer is likely to bust and you maximise the value of a strong position. Soft 18 (Ace-7) against a dealer's 9 is a hit, because 18 is likely to lose to the dealer's probable total and the Ace means you can draw safely without busting.
You don't need to memorise the full chart before your first session. Learning the core hard-total decisions is enough to substantially reduce the house edge.
Try Blackjack for Free Before Playing for Real Money
Practising with free online blackjack is the best way to build confidence before wagering real money. Free-play versions let you work through every scenario without financial pressure, so the decisions start to feel instinctive before you sit down at a real table.
FAQ – How to Play Blackjack
What happens if the dealer and player tie in blackjack?
A tie is called a push. Your original stake is returned in full, and no winnings are paid.
What is the difference between hard 17 and soft 17 in blackjack?
A hard 17 contains no Ace counted as 11, for example, 10-7 or 8-5-4. A soft 17 contains an Ace counted as 11, for example, Ace-6. A soft 17 can be safely hit because if the draw card pushes the total above 21, the Ace reverts to 1 rather than causing a bust. A hard 17 can't be hit safely; any card of 5 or higher busts the hand.
Can you split any pair in blackjack?
You can split any two cards of equal value, including 10-value cards of different ranks (for example, a King and a Jack). Splitting 10-value cards is almost never correct, though. A total of 20 is a near-unbeatable hand; splitting it throws away that advantage.
Should you take insurance in blackjack?
No, for most players. Insurance pays 2 to 1 if the dealer has blackjack, but the house edge on the bet is high, typically around 7% in a multi-deck game. Over time, it costs more than it saves.
What is the best strategy for a beginner playing blackjack?
Learn basic strategy. It covers the mathematically correct decision for every hand against every dealer up-card. You don't need to memorise the full chart before your first session – focusing on hard-total decisions is enough to significantly reduce the house edge. Charts are legal at most casinos and widely available online.
Key Takeaways
- Blackjack is a card game played against the dealer. The goal is to reach a hand total closer to 21 than the dealer, without exceeding 21.
- Card values: 2-10 at face value; Jack, Queen, and King worth 10; Ace worth 1 or 11.
- A blackjack (Ace + any 10-value card) pays 3 to 2 and beats any other 21.
- A hard hand contains no flexible Ace; a soft hand does. Correct strategy differs between the two.
- The dealer must hit on 16 or less and stand on 17 or more, with no exceptions.
- Playing options: stand, hit, double down, split, and surrender.
- The house edge starts at approximately 8% but falls below 0.5% with correct basic strategy.
- Always play at 3-to-2 tables. Avoid 6-to-5 games.
- Insurance and even money carry a high house edge and aren't recommended for most players.
