The chart answers one question: what now?
You are sitting at a blackjack table. The dealer has a six showing. You are holding a total of twelve. The player next to you says you should stand, but the chart on your phone says hit. That disagreement is the whole point of a hands chart. It is not a list of opinions. It is a map from the exact situation in front of you to the decision that minimises expected loss under one specific set of table rules.
A hands chart is a grid. One axis lists the player's hand, usually grouped by hard totals, soft totals, and pairs. The other axis lists the dealer's upcard, from two through ace. Each cell holds a single instruction: hit, stand, double, split, or surrender where the table allows it. The chart does not tell you that you will win the hand. It tells you which action carries the smallest expected loss across every possible outcome of that hand, given the rules the chart was built for.
What the objective is
Blackjack is a comparing card game. The objective is to finish the round with a hand total closer to 21 than the dealer's, without exceeding 21. You play only against the dealer, not against the other players at the table. If your total exceeds 21, you lose immediately, regardless of what the dealer later draws. If the dealer exceeds 21, every player who has not already busted wins. If neither busts, the higher total wins. Equal totals push, and the wager is returned.
Card values are fixed. Numbered cards count as their face value. Face cards count as ten. An ace counts as either one or eleven, whichever makes the better hand without busting. A hand containing an ace counted as eleven is called soft, because its total can drop by ten if a later card would otherwise bust it. A hand with no ace, or with an ace forced to count as one, is hard.
How a round moves from buy-in to settlement
The round begins before any card is dealt. You buy in by placing cash or chips on the table, never directly into the dealer's hand. The dealer exchanges it for playing chips. You then place a wager in the betting circle in front of your seat. Once the dealer calls no more bets, the cards are dealt.
In a common shoe-dealt format, each player receives two cards face up, and the dealer receives one card face up and one face down. The face-up card is the upcard, and it drives most of your decisions. If the dealer's upcard is an ace, the dealer usually offers insurance before checking the hole card. Insurance is a side bet that the dealer's face-down card is a ten-value card. It is a separate wager with its own house edge, and it is not part of the main hand.
Play proceeds clockwise from the dealer's left. On your turn you make one decision at a time. Hit means take another card. Stand means keep your total and end your turn. Double down means double your original wager and receive exactly one more card. Split means separate a paired starting hand into two independent hands, each with its own wager equal to the original. Surrender, where offered, means forfeit half the wager and end the hand immediately, before any further cards are dealt.
After every player has acted, the dealer reveals the hole card and plays according to a fixed rule printed on the table. The most common rule is that the dealer must hit on totals of 16 or less and stand on 17 or more. Some tables require the dealer to hit soft 17, meaning a hand containing an ace counted as eleven and totalling 17. That single rule changes several cells on a strategy chart. When the dealer's hand is complete, wagers are settled in order. Winning bets are paid at even money, except a two-card total of 21, which usually pays at a higher fixed multiple printed on the layout. Losing bets are collected. Pushed bets are left in place or returned.
Why the chart is not one chart
A basic strategy chart is derived, not invented. It is calculated from the exact rule set in use: how many decks are in the shoe, whether the dealer stands or hits on soft 17, whether doubling after splitting is allowed, whether surrender is offered, and whether the player may re-split pairs. Change any one of those rules, and some cells on the chart change. A chart built for a six-deck shoe with the dealer standing on soft 17 is not necessarily correct at a double-deck table where the dealer hits soft 17.
This is why published charts are labelled with the rule set they assume. Before you use a chart, read that label. The table rules are printed on the felt or on a placard at the table. Where the chart's stated rules differ from the table's posted rules, the chart is not the right tool for that table.
What the main decisions mean
The chart's instructions are not arbitrary. Each one follows from the structure of the game. When the dealer's upcard is a six, the dealer is in a weak position, because the fixed drawing rule forces the dealer to hit totals of 16 or less, and a six makes a bust more likely. The chart therefore tells you to stand on lower totals than you would against a strong upcard. When the dealer shows a ten, the chart tells you to hit more aggressively, because standing on a weak total against a strong upcard loses more often over the long run.
| Decision | What it does | When the chart typically calls for it |
|---|---|---|
| Hit | Take one more card | When your total is too weak to stand against the dealer's upcard |
| Stand | Keep your total and end your turn | When drawing risks busting more than standing risks losing |
| Double down | Double the wager, receive exactly one card | When your hand is strong and the dealer's upcard is weak |
| Split | Separate a pair into two hands, each with a full wager | When two separate starting hands have better combined expectation than the paired total |
| Surrender | Forfeit half the wager, end the hand | Only at tables that offer it, and only on the worst matchups |
Doubling and splitting are the two decisions new players most often misunderstand. Doubling is not a way to chase a loss. It is a way to put more money in play when the chart's arithmetic says the player's position is strong enough that the extra wager has a better expected result than taking cards one at a time. Splitting is not always correct just because you hold a pair. A pair of tens is a strong starting total of 20, and the chart almost always says to keep it rather than split it into two weaker hands.
The edge on the main bet and the side bets
The main blackjack wager carries a house edge that depends on the rule set. The edge is the mathematical advantage the operator holds on each wager, expressed as a percentage. It is the complement of the game's return to player percentage: for the same game under the same rules, the two figures sum to 100%. A chart reduces the edge on the main bet by removing avoidable mistakes, but it does not remove the edge. The house advantage remains on every hand.
Side bets are different games bolted onto the same table. Insurance, perfect pairs, and other optional wagers carry their own house edges, which are generally higher than the edge on the main bet under the same rules. The chart does not cover side bets. They are settled independently, and they do not change what the chart tells you to do with your main hand.
Procedural mistakes that cost more than they should
The first mistake is using the wrong chart. A player who memorises a chart for one rule set and then plays at a table with different rules is making decisions the chart's arithmetic never supported. The fix is to check the table's posted rules and match the chart to them.
The second mistake is touching the cards. In shoe-dealt games, players do not touch the cards at all. In pitch games dealt face down, players may handle the cards, but only with one hand and only above the table. Reaching with two hands, or moving the cards below the table line, will draw an immediate correction from the dealer. The same applies to chips: once a wager is placed and the deal begins, do not touch the bet until the hand is settled. Changing a wager after cards are out is treated as a serious procedural violation.
The third mistake is signalling ambiguously. In a face-up shoe game, your hand signals are what the dealer and the cameras record. A tap on the felt means hit. A horizontal wave of the palm means stand. A double down is signalled by placing an additional wager beside the original, not by saying the word alone. Saying one thing while signalling another creates a dispute that the surveillance recording will resolve against you. Learn the signals for the table format you are playing before you sit down.
What the chart cannot do
A hands chart does not predict the next card. It does not know whether the deck is rich or poor in tens, because it assumes a full shoe of the stated composition. It does not guarantee that the correct play wins this hand. It only selects the play that loses least on average across every possible continuation. In the short run, the correct play loses often. That is the nature of a negative-expectation game. The chart's value is that it removes the most expensive kind of error: the avoidable one.
FAQ
Do I need to memorise the whole chart before playing?
No. Many players keep a printed chart at the table or consult one between hands, and most venues permit this for the main game. What matters is that the chart matches the table's posted rules. Start by learning the hard totals and the dealer's weakest upcards, then add soft totals and pairs as they come up in play.
Why does the chart say to hit a 12 against a dealer's 2 but stand against a 6?
Because the dealer's fixed drawing rule changes the risk. Against a 2, the dealer has a reasonable chance to build a strong total, so a weak 12 needs to improve. Against a 6, the dealer is forced to draw and busts more often, so the chart tells you to stand and let the dealer take the risk. Both instructions come from the same arithmetic applied to different situations.
Does the chart change if I am playing online?
The chart changes only if the rules change. An online table with the same number of decks, the same dealer soft-17 rule, and the same doubling and splitting options uses the same chart as a live table with those rules. Check the game's information panel for the rule set, then use the chart built for that set.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.