Blackjack Strategy: Basic Strategy Charts and Tips

A soft hand, explained

Your hand

A♠7♥

Dealer shows

7♣

By Ken Tucker (Kendall Saville) · Updated 30 October 2026 by the OnlineBlackjack.com editorial team

Blackjack basic strategy tells you which decision has the best expected return for your hand and the dealer’s upcard under a specific set of rules. It reduces avoidable mistakes, but it does not guarantee a win or remove the house edge in a typical game.

Go to the strategy charts | How to use them | Beginner tips | Practise with virtual chips

Is there a perfect blackjack strategy?

Yes, for a given set of rules. Basic strategy is the mathematically best play for every combination of your hand and the dealer’s upcard, worked out by computer simulation of billions of hands. The first version was published in 1956 by Roger Baldwin, Wilbert Cantey, Herbert Maisel and James McDermott in the Journal of the American Statistical Association, and mathematician Edward Thorp refined it by computer in his 1962 book Beat the Dealer. In a good multi-deck game (3:2 blackjack, dealer stands on soft 17, double after splitting) it brings the house edge down to roughly 0.5%. Playing by feel typically costs several times that.

“Perfect” has limits. Basic strategy assumes you know nothing about the cards already dealt. Going beyond it means tracking those cards, which is what card counting does, and that only works in shoe games that are not reshuffled every hand.

Choose the chart for the game

Check your table before choosing a chart

• Decks and soft 17: match the deck count and S17/H17 setting.
• Surrender: establish whether it is offered and whether it is early or late.
• Splits and doubles: check doubling after a split and restrictions on split aces.
• Dealer blackjack: check peek rules and whether additional wagers can lose.

Free Bet, Charlie and multiplier games can need different strategy. A general chart does not cover every live variant.

Check the reference game rules →

Blackjack basic strategy charts

How to use a blackjack strategy chart

1. Check the game rules. Confirm the number of decks, whether the dealer hits or stands on soft 17, whether doubling after a split is allowed, and whether surrender is available.
2. Check surrender first. Use the late-surrender instructions above only when that option is available.
3. Look for a pair. Check the pair chart before treating two matching cards as a total.
4. Check for a soft hand. An ace counted as 11 makes a hand soft. For example, ace-seven is soft 18.
5. Otherwise use the hard-hand chart. Match your total with the dealer’s upcard and follow the letter at the intersection.

Example: soft 18 against a dealer 7

With ace-seven against a dealer 7, the S17 chart says stand. Against a dealer 9, 10 or ace it says hit. Soft totals need their own chart; treating every 18 the same produces mistakes.

What changes when the dealer hits soft 17?

H17 means the dealer draws with an ace counted as 11 in a total of 17. That changes several doubling and surrender decisions. Use an H17-specific chart rather than applying the S17 tables above. Our free multiplayer trainer displays H17 rules; check its on-screen settings before practising. The linked Wizard of Odds calculator can generate a strategy for different rules.

How to read a blackjack strategy chart

Watch the strategy-chart video.

English narration with on-screen captions. This example uses six decks with the dealer hitting soft 17; match your chart to the table rules.

Read the video transcript

Fifteen isn’t an automatic hit or stand. Watch how one dealer card changes the decision.

Before using a strategy chart, match it to the table rules. This example uses six decks, with the dealer hitting soft seventeen.

You’ve got a king and a five: hard fifteen. The dealer shows a seven.

On the matching chart, find the hard-total row for fifteen. Then find the dealer’s seven at the top. Follow the row and column to their meeting point: hit.

Now keep your hand exactly the same, but change the dealer’s card to a six. Follow the same row to the new column. This time, the chart says stand.

Same total. Different dealer card. Different decision.

Use the correct section for hard totals, soft totals or pairs, and always check the chart’s legend. A recommended play can still lose.

Try one decision at a time in the free OnlineBlackjack practice game, then check the coach. Practice chips have no cash value.

Common basic strategy mistakes

• Using a single-deck chart for a multi-deck game, or overlooking H17 versus S17.
• Doubling when the correct fallback is to hit or stand because doubling is unavailable.
• Taking insurance or even money without an advantage-play reason.
• Assuming a betting system changes the mathematical value of a hand.
• Expecting a short session to prove whether a strategy works. Variance can overwhelm the effect of good decisions.

More on this: common blackjack mistakes, how not to play blackjack, the biggest blackjack myths and other blackjack errors to avoid.

8 blackjack tips for beginners

1. Use the chart for your table’s rules. Check the deck count and whether the dealer hits or stands on soft 17 before you sit down.
2. Only play 3:2 blackjack. A 6:5 payout adds about 1.4% to the house edge, which is worse than almost any other rule change.
3. Skip insurance and even money. Insurance is a side bet with a large house edge unless you are counting cards.
4. Always split aces and eights; never split tens or fives. Two tens is 20 (more in our guide to splitting 10s), and two fives is a 10 you should usually double.
5. Double down when the chart says so. Doubling 11 and 10 against weak dealer cards is where most of basic strategy’s value comes from.
6. Stand on 12-16 only against a dealer 2-6 (12 against 2 or 3 is a hit). Against 7 or higher, hit, unless surrender is available and the chart says to surrender.
7. Set a budget and a flat bet size. Betting systems such as Martingale change how you lose, not whether you lose. See betting strategies and bankroll management.
8. Practise for free first. Play a few hundred hands with the chart open in our free blackjack game until the decisions are automatic.

Basic strategy, house edge and card counting

Basic strategy chooses a play from the hand and the table rules. Card counting also uses information about cards already dealt from a shoe, for example with the Hi-Lo count. It does not work in standard RNG games that reshuffle every hand. Learn the blackjack rules and understand house advantage before considering more advanced play. New to the game? Start with how to play blackjack.

Practise without risking money, take breaks and set a budget if you later play for money. Good strategy cannot make a losing session impossible.

Blackjack strategy FAQ

What is the best strategy for blackjack?

Basic strategy for the exact rules of your table. No betting system or “trick” beats it, and card counting builds on it rather than replacing it.

Does basic strategy guarantee a win?

No. It gives the best long-run result for each decision, but the house keeps a small edge and short sessions are dominated by luck.

Should you always hit on 16?

No. Stand on hard 16 against a dealer 2-6. Hit against 7 or higher, or surrender against 9, 10 or ace if the table allows late surrender.

Is basic strategy the same online?

Yes, for RNG blackjack with the same rules. Online games reshuffle every hand, so the charts are all you need; counting does not help.

How long does it take to learn?

Most players learn the hard-hand decisions in an evening. Soft hands and pairs take a few sessions of practice with the chart open.

Where to play online blackjack

When comparing real-money blackjack sites, check 3:2 payouts, the exact game rules, minimum bets and whether blackjack is eligible for any advertised bonus. Read the casino review and bonus terms before depositing.