Blackjack Basic Strategy Chart: The Complete Guide to When to Hit, Stand, Double & Split

Blackjack basic strategy is the mathematically optimal way to play every hand in blackjack. Derived from computer simulations of billions of hands, this blackjack strategy chart tells you exactly when to hit, stand, double down, split, or surrender based on your cards and the dealer's upcard. Playing perfect basic strategy blackjack reduces the house edge to roughly 0.5% -- making blackjack one of the best bets in the entire casino. This guide gives you the complete blackjack cheat sheet along with the reasoning behind every decision.

Every year, casual blackjack players leave billions of dollars on the table by making mathematically incorrect decisions. They stand when they should hit, they never double down when the odds favor it, and they split pairs at the wrong times. The difference between a player using basic strategy and one playing on instinct can be as much as 2% to 5% in house edge -- which translates to losing two to ten times faster over a long session. The good news is that basic strategy is not difficult to learn. It is a finite set of rules that covers every possible situation, and once you internalize the chart, you will never have to guess again.

This guide covers everything you need to know about blackjack basic strategy: what it is, how the chart works, the complete strategy tables for hard totals, soft totals, and pairs, when to hit or stand, when to double down, when to split, when to surrender, common mistakes that cost players money, and how basic strategy affects the house edge. Whether you are a complete beginner or a seasoned player looking to sharpen your game, this is your definitive blackjack cheat sheet. If you are also interested in the mathematical underpinnings of the game, check out our guide on Blackjack Odds and House Edge for a deeper dive into the numbers.

What Is Blackjack Basic Strategy?

Blackjack basic strategy is a complete set of mathematically derived rules that dictate the optimal action for every possible combination of your hand total and the dealer's upcard. It was first developed in the 1950s and 1960s by mathematicians including Roger Baldwin, Wilbert Cantey, Herbert Maisel, and James McDermott, who used desk calculators to analyze blackjack probabilities. Edward O. Thorp later refined their work using early computers and published the results in his groundbreaking 1962 book, "Beat the Dealer." Since then, computer simulations running billions of hands have verified and fine-tuned the strategy to the point where it is considered mathematically settled.

The core idea behind basic strategy is straightforward: for every situation you can encounter at the blackjack table, there is one action that loses the least money (or wins the most money) on average. Basic strategy does not eliminate the house edge entirely -- the casino still has a small mathematical advantage -- but it reduces that edge to the absolute minimum achievable without card counting. A typical recreational player who makes decisions by gut feeling faces a house edge of 2% to 5%. A player using perfect basic strategy faces a house edge of approximately 0.5%, depending on the specific table rules. That difference is enormous over thousands of hands.

It is important to understand that basic strategy is not a guarantee of winning any individual hand. Blackjack remains a game with inherent variance, and you will experience losing streaks even with perfect play. What basic strategy guarantees is that you are making the decision with the highest expected value every single time. Over the long run, this means you lose less money than any other approach (short of card counting), and during favorable variance, you maximize your winnings. Basic strategy is the foundation upon which all advanced blackjack techniques, including card counting, are built.

How Does the Basic Strategy Chart Work?

The blackjack strategy chart is organized as a grid. The rows represent your hand (categorized by type and total), and the columns represent the dealer's upcard (2 through ace). Each cell in the grid tells you the optimal action: hit, stand, double down, split, or surrender. To use the chart, you first classify your hand as a hard total, a soft total, or a pair, then find the intersection of your hand and the dealer's upcard to determine your play. The chart is designed to be a complete blackjack cheat sheet that requires zero memorization of underlying math -- you simply look up the answer and follow it.

The chart is divided into three main sections because different hand types require different strategic approaches. Hard totals are hands without an ace counted as 11. They are the most common and the most straightforward. Soft totals are hands containing an ace counted as 11, which gives them extra flexibility because you cannot bust by taking a hit. Pairs are two cards of the same rank, where you have the option to split into two separate hands. Each section has its own logic, and learning them separately makes memorization much easier.

The standard basic strategy chart assumes a multi-deck game (4, 6, or 8 decks) where the dealer stands on soft 17, doubling is allowed on any two cards, doubling after splitting is allowed, and late surrender is available. These are the most common rules in American casinos. If your casino uses different rules -- such as the dealer hitting on soft 17, or no surrender -- certain cells in the chart change slightly. We will note the most important rule variations later in this guide.

Chart Legend

What Is the Basic Strategy for Hard Totals?

Hard totals are the most frequently dealt hands in blackjack and the backbone of basic strategy. A hard hand is any hand that does not contain an ace valued at 11, or any hand where the ace must count as 1 to avoid exceeding 21. For example, 10-7 is hard 17, and A-6-10 is also hard 17 because the ace must count as 1. The strategy for hard totals follows a logical pattern: the higher your total, the more likely you are to stand, because taking another card risks busting. Conversely, lower totals almost always require a hit because standing on a low number means you are counting on the dealer to bust -- which happens less often than most players assume.

The key threshold in the hard totals chart is 17. You should always stand on hard 17 or higher, because the risk of busting outweighs any potential benefit of improving your hand. At the other end, you should always hit hard 8 or lower, because any card will improve your hand without any risk of busting. The interesting decisions happen in the range of hard 9 through hard 16, where the optimal play depends on the dealer's upcard. Against weak dealer upcards (2 through 6), you are more aggressive with doubling and standing. Against strong dealer upcards (7 through ace), you take more hits because the dealer is likely to make a strong hand.

What Is the Basic Strategy for Soft Totals?

Soft totals are hands that contain an ace counted as 11. They are called "soft" because the hand total is flexible -- if you draw a card that would otherwise cause a bust, the ace automatically converts from 11 to 1, and the hand becomes a hard total. This flexibility makes soft hands significantly more valuable than their hard equivalents. For example, soft 17 (A-6) is a much better hand than hard 17 (10-7) because you can hit soft 17 without any risk of busting. The worst possible outcome is that your ace converts to 1 and you end up with a hard total that you can continue to play.

Because soft hands cannot bust on a single hit, basic strategy is more aggressive with them. You will notice far more doubling opportunities in the soft totals chart compared to the hard totals chart. The general pattern is to double soft 13 through soft 18 against weak dealer upcards (primarily 4, 5, and 6) and to hit soft 17 or lower against strong dealer upcards. Standing with a soft hand typically only happens at soft 19 (A-8) or soft 20 (A-9), which are already strong totals. One of the most common mistakes recreational players make is standing on soft 17, which is always incorrect -- you should always hit (or double) a soft 17 because you cannot make it worse and you have a strong chance of improving it.

What Is the Basic Strategy for Splitting Pairs?

When you are dealt two cards of the same rank, you have the option to split them into two separate hands, each receiving a new second card. You must place an additional bet equal to your original wager on the second hand. Splitting is a powerful tool because it allows you to turn one bad hand into two better hands, or to maximize your action when the dealer is in a weak position. However, not all pairs should be split -- some are better played as a single hand. The pair splitting chart tells you exactly when to split and when to play the hand as a hard total instead.

The two most important splitting rules to memorize are: always split aces and always split eights. Aces should always be split because each ace gives you a strong starting point for a potential 21, and there are more ten-value cards in the deck (10, J, Q, K) than any other single value. Eights should always be split because hard 16 is the worst hand in blackjack -- it is too high to comfortably hit but too low to stand on -- and splitting converts it into two hands starting at 8, each with decent prospects of reaching 18. Conversely, you should never split tens (because 20 is already an excellent hand) and never split fives (because hard 10 is a great doubling hand).

When Should You Hit or Stand in Blackjack?

Knowing when to hit or stand is the most fundamental decision in blackjack and the question that determines the outcome of the majority of hands. The hit-or-stand decision follows a simple principle: if your hand is likely to lose by standing, you should hit to try to improve it, even if hitting carries the risk of busting. If your hand is strong enough that standing gives you a better expected outcome than hitting, you should stand and hope the dealer busts or finishes with a lower total. The basic strategy chart encodes this principle mathematically for every possible scenario.

Here are the core hit-or-stand rules that cover the most common situations at the blackjack table. These rules alone account for roughly 80% of the hands you will play:

• Always stand on hard 17 or higher. The risk of busting is too great, and 17+ is often strong enough to win or push.
• Always hit hard 11 or lower. You cannot bust, and any card will improve your hand. (With hard 10 or 11, you should usually double instead of just hitting.)
• Stand on hard 12-16 against dealer 2-6. The dealer has a "bust card" showing, meaning their chance of busting is 35% to 42%. Let the dealer take the risk. The exception: hit hard 12 against dealer 2 or 3.
• Hit hard 12-16 against dealer 7-A. The dealer is likely to make 17 or better, so your stiff hand will lose most of the time. Hitting gives you a chance to improve.
• Always hit soft 17 or lower. You cannot bust, and standing on soft 17 is a losing play because 17 is a weak total.
• Stand on soft 19 and soft 20. These are strong hands that should not be tampered with.
• Soft 18 is nuanced: stand against dealer 2, 7, or 8; hit against dealer 9, 10, or ace; double against dealer 3-6 if allowed.

When Should You Double Down in Blackjack?

Doubling down is one of the most powerful moves available to a blackjack player. When you double down, you place an additional bet equal to your original wager and receive exactly one more card -- no more, no less. The appeal of doubling is that it lets you put more money on the table when the odds are in your favor. Basic strategy identifies specific situations where doubling down has a positive expected value, meaning that on average you will win more money by doubling than by simply hitting. Missing these doubling opportunities is one of the costliest mistakes a blackjack player can make.

The general principle behind doubling is straightforward: you want to double when you have a strong hand (typically 9, 10, or 11) and the dealer has a weak upcard. In these situations, you are likely to draw a high card (since there are more ten-value cards than any other single value) and finish with a total of 19, 20, or 21. Meanwhile, the dealer's weak upcard means they have a higher probability of busting. The combination of these two factors creates a favorable situation where increasing your bet is mathematically correct.

Key Doubling Rules

• Always double hard 11. This is the strongest doubling hand in blackjack. Against every dealer upcard from 2 through ace, doubling 11 wins more money than simply hitting. The most common outcome is drawing a 10-value card for a total of 21.
• Double hard 10 against dealer 2-9. With a 10, you are likely to reach 20, which beats most dealer hands. Only refrain from doubling against dealer 10 or ace, where the dealer may match or beat you.
• Double hard 9 against dealer 3-6. A total of 9 is good enough to double against weak dealer cards, as you are likely to end up with 18 or 19. Against dealer 2 or 7+, simply hit.
• Double soft 13-18 against dealer 4-6 (with variations). Soft hands are flexible enough to double against weak dealer cards. The exact ranges vary: soft 13-14 doubles against 5-6, soft 15-16 against 4-6, soft 17 against 3-6, and soft 18 against 2-6.

When Should You Surrender in Blackjack?

Surrender is the least-used option in blackjack, but knowing when to use it can save a meaningful amount of money over time. When you surrender, you forfeit half your bet and give up your hand immediately, without playing it out. This option is only available as the first action on your initial two cards (before hitting, doubling, or splitting). Not all casinos offer surrender, and those that do typically offer "late surrender," which means you can only surrender after the dealer checks for blackjack. Early surrender (before the dealer checks) is extremely rare but more favorable to the player.

Surrendering is correct in a surprisingly small number of situations, but each one is significant. The fundamental principle is: surrender when your expected loss from playing the hand exceeds 50%. Since surrendering costs you exactly 50% of your bet, it is the better option whenever hitting or standing would lose you more than 50% on average. These situations arise when you have a stiff hand (hard 15 or 16) against the dealer's strongest upcards (9, 10, or ace).

When to Surrender (Late Surrender, Multi-Deck)

• Surrender hard 16 against dealer 9, 10, or ace. Hard 16 (not a pair of 8s) is the worst hand in blackjack. Against a dealer 9, 10, or ace, your expected loss from playing is approximately 51% to 54%, making surrender the superior option.
• Surrender hard 15 against dealer 10. Hard 15 against a dealer 10 has an expected loss of about 51% when hitting, so surrendering at exactly 50% saves you money.
• Do not surrender pairs of 8s. Even though 8-8 totals 16, you should always split eights rather than surrender. Splitting converts one terrible hand into two decent starting hands.

What Are the Most Common Basic Strategy Mistakes?

Even players who claim to know basic strategy often make recurring errors that cost them significant money over time. These mistakes typically stem from emotional reactions, superstitious thinking, or a misunderstanding of the math behind the game. Identifying and eliminating these errors is one of the fastest ways to improve your blackjack results. Below are the most common basic strategy mistakes, ranked roughly by how much they cost the average player.

Mistake 1: Standing on Soft 17

This is arguably the most widespread error in recreational blackjack. Players see an ace and a 6, calculate a total of 17, and stand. But soft 17 is not the same as hard 17. You should always hit (or double) soft 17. Standing on soft 17 has an expected value of approximately -0.11 (you lose 11 cents for every dollar wagered), while hitting has an expected value of approximately -0.01 (nearly break-even). That is a difference of 10 cents per dollar bet on every soft 17 hand. Over a long session, this single mistake can cost more than all other errors combined.

Mistake 2: Never Doubling Down

Many cautious players are reluctant to put up additional money, so they never double down. This is extremely costly because doubling in the right situations is the primary way the player recovers some of the house edge. Refusing to double on hard 10 and 11 when the dealer shows weak cards leaves a substantial amount of expected value on the table. On average, correct doubling is worth approximately 1.6% of the total house edge reduction provided by basic strategy. Players who never double effectively play with a 2% or higher house edge instead of 0.5%.

Mistake 3: Always Splitting Tens

Some players get excited at the prospect of turning one hand into two and split their pair of tens or face cards. This is nearly always wrong. A total of 20 is the second-best hand in blackjack (behind only 21). Splitting converts a near-certain winner into two uncertain hands. The only time splitting tens is correct is when you are counting cards and the count is highly favorable -- and that is an advanced technique, not basic strategy. In basic strategy, never split tens.

Mistake 4: Taking Insurance

When the dealer shows an ace, the casino offers "insurance" -- a side bet that pays 2:1 if the dealer has blackjack. The insurance bet costs half your original wager. Many players take insurance to "protect" their good hands. However, insurance is a bad bet mathematically. The dealer has a 10-value card underneath approximately 30.8% of the time (in a freshly shuffled multi-deck shoe), but the insurance bet requires a probability above 33.3% to break even (since it pays 2:1). Basic strategy says: never take insurance. Over time, insurance costs you roughly 7.4% of the insurance bet amount -- one of the worst wagers on the table.

Mistake 5: Playing by "Feel" Instead of the Chart

The most fundamental mistake is deviating from basic strategy based on hunches, streaks, or superstition. "I've been losing all night, so I'll stand on this 15" or "My gut says hit" are statements that lose money. The math does not care about your recent results or your feelings. Every hand is independent, and the correct play is the correct play regardless of context. The entire purpose of basic strategy is to remove emotion from decision-making and replace it with mathematics.

How Does Basic Strategy Affect the House Edge?

The house edge in blackjack is the mathematical percentage of each bet that the casino expects to keep over the long run. Without any strategy -- simply hitting and standing at random -- the house edge would be astronomical. A typical recreational player who uses intuition-based decisions faces a house edge of approximately 2% to 5%. A player using perfect basic strategy in a standard multi-deck game with favorable rules reduces the house edge to approximately 0.5%. This makes basic strategy blackjack one of the lowest house edge games in any casino, rivaled only by certain video poker machines and baccarat banker bets.

To put the house edge in practical terms: at a $10 minimum bet table, a player making 80 hands per hour with a 2% house edge loses an average of $16 per hour. The same player using basic strategy at 0.5% loses an average of $4 per hour. That is a difference of $12 per hour, or $120 over a 10-hour session. Multiply that across months and years of play, and the savings from basic strategy amount to thousands of dollars. It is the single most important thing any blackjack player can do to protect their bankroll.

How Do You Memorize the Basic Strategy Chart?

Memorizing the complete basic strategy chart may seem daunting at first, but it is far more manageable than most players expect. The chart contains roughly 270 cells, but many of them follow simple patterns that can be condensed into a handful of rules. Most players can memorize the entire chart in one to two weeks of focused practice. The key is to break it into logical groups and learn the rules, not the individual cells. Once you understand the reasoning behind the chart, the specific plays become intuitive rather than rote.

Step-by-Step Memorization Method

1. Start with hard totals. Hard hands are the most common, so learning them first gives you the biggest immediate improvement. Memorize the "always" rules first: always stand on 17+, always hit 8 or below, always double 11.
2. Learn the stiff hands (12-16) next. The rule is simple: stand against dealer 2-6 (with exceptions for 12 vs. 2 and 12 vs. 3, where you hit), and hit against dealer 7-A. Add surrender: 16 vs. 9/10/A and 15 vs. 10.
3. Memorize the doubling rules for 9 and 10. Double 10 against 2-9. Double 9 against 3-6. These cover the vast majority of hard total doubling situations.
4. Move to soft totals. The pattern: always hit soft 17 or below, always stand soft 19 or above. Soft 18 is the tricky one -- double vs. 3-6, stand vs. 2/7/8, hit vs. 9/10/A. For the others, double against the dealer's weakest cards (primarily 4-6) and hit the rest.
5. Finish with pairs. Learn the "always" rules: always split aces and 8s, never split 5s and 10s. For the remaining pairs, the general pattern is to split against dealer 2-6 or 2-7 and hit against higher dealer cards.
6. Practice with flashcards or a trainer app. Use a free blackjack basic strategy trainer to drill random hands until you can make the correct decision in under two seconds. Our free blackjack trainer is designed specifically for this purpose.

How Do Rule Variations Change Basic Strategy?

The basic strategy chart presented in this guide is optimized for the most common multi-deck game with standard rules: dealer stands on soft 17 (S17), double after split allowed (DAS), and late surrender available. However, different casinos use different rule sets, and some of these variations change the optimal play in specific situations. Understanding these adjustments ensures you are always playing the mathematically correct strategy regardless of the table rules. The good news is that the vast majority of the chart stays the same -- only a handful of cells change between rule sets.

Dealer Hits Soft 17 (H17)

When the dealer hits soft 17 instead of standing, the house edge increases by approximately 0.2%. The key strategy changes are:

• Double hard 11 against dealer ace (instead of hitting)
• Double soft 19 (A-8) against dealer 6 (instead of standing)
• Surrender hard 15 against dealer ace (in addition to the standard surrenders)
• Surrender hard 17 against dealer ace

No Double After Split (NDAS)

When the casino does not allow doubling after splitting, some pair-splitting decisions change because the value of splitting is reduced. Specifically:

• Do not split 2-2 against dealer 2 or 3 (hit instead)
• Do not split 3-3 against dealer 2 or 3 (hit instead)
• Do not split 4-4 at all (hit against 5 and 6 instead of splitting)
• Do not split 6-6 against dealer 2 (hit instead)

No Surrender Available

If the casino does not offer surrender, simply hit in all spots where the chart recommends surrender. The most affected hands are hard 16 vs. 9/10/A and hard 15 vs. 10. Without surrender, these hands have slightly worse expected outcomes, but hitting is the next best option. The lack of surrender increases the house edge by approximately 0.07%.

What Comes After Basic Strategy?

Once you have mastered basic strategy and can play every hand correctly without hesitation, you have reached the point of diminishing returns for "non-counting" blackjack play. The house edge is already at its floor, and there is no further improvement possible from strategy alone. The next step for serious players who want to gain an actual edge over the casino is card counting. Card counting builds directly on top of basic strategy by adjusting your play and bet sizes based on the composition of the remaining cards in the shoe.

Card counting does not replace basic strategy -- it modifies it. A card counter still plays basic strategy as the default and only deviates when the count indicates that a different play is optimal due to the remaining card composition. For example, basic strategy says to stand on hard 16 vs. dealer 10 (after considering surrender). But a card counter might hit this hand when the count is very negative (indicating more small cards remain) and stand when the count is very positive (indicating more tens and aces remain). These deviations, called "index plays" or "illustrious 18," provide an additional edge on top of basic strategy. For a complete introduction to this topic, read our guide on Blackjack Card Counting.

Even if you never intend to count cards, mastering basic strategy is valuable in its own right. It lets you enjoy blackjack as entertainment while losing the absolute minimum amount of money to the house. At a 0.5% house edge, a $10 bettor playing 80 hands per hour expects to lose only $4 per hour -- significantly less than most other forms of casino entertainment. Compare that to slot machines, which typically carry a house edge of 5% to 15%, or to roulette at 5.26%. Blackjack with basic strategy is, mathematically, one of the cheapest entertainment options in any casino.

What Is the Quickest Way to Remember Basic Strategy?

For players who want a condensed blackjack cheat sheet that covers the most critical decisions, here are the ten golden rules of basic strategy. These rules are not a substitute for the full chart, but they capture the highest-impact plays and will immediately improve the results of any player who follows them. Memorize these ten rules first, then fill in the nuances from the complete chart as you gain experience.

1. Always split aces and eights.
2. Never split tens or fives.
3. Always double hard 11.
4. Double hard 10 against dealer 2-9.
5. Always stand on hard 17 or higher.
6. Always hit hard 11 or lower (double if applicable).
7. Stand on 12-16 vs. dealer 2-6; hit vs. 7+. (Except: hit 12 vs. 2 and 3.)
8. Always hit or double soft 17 or lower -- never stand.
9. Never take insurance.
10. Surrender 16 vs. 9/10/A and 15 vs. 10 when available.

These ten rules, combined with the complete charts above, form your definitive blackjack basic strategy guide. Print the charts, study them, practice with a trainer app, and bring a strategy card to the table until you have every play memorized. The mathematical edge you gain from perfect basic strategy is real, significant, and available to anyone willing to invest a few hours of study. There is no other casino game where a small amount of knowledge yields such a large reduction in the house advantage.