How to play blackjack

01 The object of the game

Beat the dealer's hand without going over 21. That is the whole goal, and two things about it surprise people.

The first: you are not trying to reach 21. Twenty-one is the ceiling, not the target. A winning hand is often a 17 that beat the dealer's 16, and plenty of hands are won without you drawing a card at all — because the dealer drew and busted.

The second: you are not playing against the other people at the table. Blackjack looks like a group game and is not one. Every seat plays its own hand against the dealer, one on one. What the person next to you does cannot cost you your hand, no matter how confidently they tell you otherwise.

Going over 21 is called busting, and it loses immediately — before the dealer plays a card. That asymmetry is the entire house edge, and everything in basic strategy is a response to it.

02 Card values and hand totals

Suits do nothing in blackjack. Only the rank matters:

• 2 through 10 are worth their face value.
• Jack, queen and king are each worth 10. Together with the tens they make sixteen of every fifty-two cards a "ten" — which is why so much strategy is built on the assumption that the next card is probably a ten.
• An ace is worth 11, unless counting it as 11 would put you over 21. Then it quietly becomes a 1.

That last rule creates the two kinds of hand you will hear named at the table. A hard hand has no ace, or has an ace that is already being counted as 1. A soft hand has an ace counted as 11, which means it cannot bust on the next card — the ace just drops to 1 to catch you.

Note the last two rows. Twenty-one made from three cards is a fine hand and an ordinary one. Only a two-card ace-plus-ten is a blackjack, and only a blackjack collects the bonus payout.

03 How a hand plays out

The order never changes:

• You bet first. Every decision you make afterwards is made with money already committed. This is not incidental — it is why the game is hard.
• Two cards to you, face up. Two to the dealer, one up and one down. The dealer's face-up card is the up-card, and it is the single most important piece of information at the table. The face-down card is the hole card.
• Blackjacks are checked. If you have a natural, it is usually paid straight away. If the dealer shows an ace or a ten, they may peek at the hole card and end the hand immediately if it is a blackjack.
• You play your hand out. Hit as many times as you like. Stand when you're done. Bust and the hand is over — your bet is collected there and then.
• The dealer plays. They turn over the hole card and follow a fixed rule with no judgement in it at all.
• Bets settle. Higher total wins. Equal totals push.

If you want the sequence in your hands rather than on a page, there is a free hand of blackjack running in your browser — no download, no account, no money.

04 Your five moves

Everything you will ever do at a blackjack table is one of these. Which ones are available depends on the moment.

Hit

Take another card. You can hit as many times as you like until you stand or bust. There is no limit and no penalty for a long hand — a five-card 21 spends exactly the same as a two-card one.

Stand

Take no more cards and pass to the dealer. Standing on a bad total is not cowardice; on a hard 16 against a dealer 6 it is simply the least-bad option, and basic strategy will tell you to do it without blinking.

Double down

Double your original bet in exchange for exactly one more card, then you are forced to stand. It is the best move in the game when it is right and an expensive one when it isn't. You may only double on your first two cards. The classic doubles are a hard 10 or 11 against a weak dealer up-card, where you are likely to make 20 or 21 and the dealer is likely to bust.

Split

If your two cards are the same rank, you can split them into two separate hands, each getting a second card and each carrying a bet the size of your original. Most tables let you split up to four hands. Split aces normally get one card each and no more, and the resulting 21 is a plain 21 rather than a blackjack.

Two splits matter more than the rest: always split aces and eights, and never split tens or fives. A pair of eights is a hard 16, the worst hand in blackjack; splitting turns one terrible hand into two mediocre ones, which is an upgrade. A pair of tens is a 20, and breaking up a 20 to chase something better is how good hands become bad ones.

Insurance (and surrender)

When the dealer shows an ace, you will be offered insurance: a side bet, up to half your original stake, that the hole card is a ten. It pays 2 : 1. It is also, in a six-deck game, a losing bet — roughly 30.8% of the remaining cards are tens and you need 33.3% to break even. Decline it. If you hold a blackjack you may be offered "even money", which is insurance wearing a friendlier name. Decline that too.

Surrender, where offered, lets you fold a hand before drawing and get half your bet back. It looks defeatist and is mathematically correct on a small handful of hands — a hard 16 against a dealer 9, 10 or ace chief among them.

05 What the dealer must do

The only variation is the soft 17 — a hand like ace-6. Some tables make the dealer stand on it (written on the felt as S17), others make them hit it (H17). S17 is better for you by about 0.2% of every bet, which is a lot in a game whose entire house edge is around half a percent. Just Blackjack stands on all 17.

The dealer also cannot bust before you do, because they play last. Bust first and your bet is gone whether or not the dealer would have gone on to bust with a 26. This is the source of the house's whole advantage — not the odds of any single card, but the running order.

06 Payouts and pushes

Watch the blackjack payout in particular. A table paying 6 : 5 instead of 3 : 2 adds roughly 1.4% to the house edge — it roughly triples it — and it is printed on the felt in the same friendly type as everything else. If a table pays 6 : 5, walk past it.

A push is a tie, and it is a non-event: nobody wins, your chips stay where they are. Push on 20 against a dealer 20 often feels like a loss. It isn't.

07 Soft hands, and why they change everything

A soft hand — one where an ace is still counting as 11 — is a free swing. You cannot bust it with one card. Ace-7 is an 18; draw a king and it is still an 18.

This makes soft hands the most misplayed in the game. Beginners see "18" and stand, the way they would with 10-8. But a soft 18 against a dealer 9, 10 or ace is a losing hand that you are allowed to improve for free, so you hit it — and against a dealer 3 through 6 you double it, because there is no downside card in the deck.

Learning to see the ace as flexible rather than as a number is the single biggest jump most players make. The soft-totals section of the strategy chart is worth more study than the rest of it combined.

08 Where the house edge comes from

Played perfectly, six-deck blackjack with dealer standing on 17 leaves the house an edge of roughly 0.5% — among the best odds on any casino floor. Played by feel, that same game costs the average player something closer to 2%. The gap between those numbers is not luck. It is the chart.

And the house edge is not built from stacked decks or clever shuffling. It is built from one rule: you act first. When both of you bust, you have already lost. Every other rule — the 3 : 2 bonus, the right to double, the right to split — is a partial refund the game hands back to make it a contest.

That is also why a shuffle you can verify matters. If you can check that the shoe was fixed before the first card and never touched again, the 0.5% is the whole story. If you cannot, you are taking someone's word for it. Just Blackjack commits to every shoe's seed before dealing and lets you export the shoe afterwards to check the order yourself.

09 Five mistakes beginners make

• Taking insurance. It loses money on average, every time, forever. There is no dealer up-card that makes it correct without card counting.
• Standing on 16 against a 10. It feels safe. It isn't — you lose either way most of the time, and hitting loses slightly less often. Take the least-bad option.
• Splitting tens. Twenty is the second-best hand in the game. Two hands starting from a 10 are worth far less than one hand of 20.
• Playing the dealer's bust card. "The dealer is showing a 6, they'll bust." A dealer showing a 6 busts about 42% of the time — which means they make a hand the other 58%.
• Chasing losses with bigger bets. The cards have no memory of your last eight hands. A doubled bet after a loss is a doubled loss slightly more often than it is a recovery.

10 Rule variations worth checking

Two tables can both say "blackjack" on the felt and differ by more than a full percent. In rough order of how much they cost you:

Once you know the rules, the next thing to learn is which move each combination of your hand and the dealer's up-card calls for. That is a chart, not a philosophy, and it fits on one page.