Blackjack 101: When to Hit, Stand, Double Down, or Split.

Most casino games give you no decisions to make. You place the bet, the result happens, and you either win or lose. Blackjack is different. Every hand puts a decision in front of you, and the decision you make directly affects the outcome over time.

That is what makes blackjack worth learning properly. The house still has an edge. You cannot eliminate it. But you can reduce it significantly by making the right call on every hand. Players who guess or go on gut feel give the house 2% to 4%. Players who use correct basic strategy bring that edge down to around 0.5%.

That gap is not small. In a few hundred hands, this can mean the difference between a small loss and a session that ends too soon.

This post explains the four main decisions in blackjack. It also talks about when to make each choice and the reasoning behind the rules. This way, they will stick better.

The Setup

Before the decisions, a quick reminder of what you are working with.

• You are dealt two cards. The dealer is dealt two cards, one face up and one face down. Your goal is not to reach twenty-one. Your goal is to beat the dealer without going over twenty-one. That distinction matters because it changes how you think about risk.
• Cards two through ten are worth face value. Face cards are worth ten. Aces are worth one or eleven, whichever helps your hand more. A hand containing an ace counted as eleven is called a soft hand. A hand where the ace must count as one to avoid busting is a hard hand.
• The dealer plays by fixed rules. They must hit until they reach seventeen or higher. They cannot deviate from those rules regardless of what you are holding. That rigidity is actually useful. It means you can make decisions based on predictable dealer behaviour.

When to Hit

Hitting means taking another card. You do this when your total is too low to beat the dealer. Also, the risk of busting must be low enough to make it worth it.

The basic rules for hitting are straightforward.

• Hard totals of eight or less. Always hit. You cannot bust, and you need more card value to compete.
• Hard nine. Hit unless the dealer is showing a three, four, five, or six. Those are weak dealer cards that carry a high bust probability.
• Hard ten or eleven. These are strong positions covered in the doubling section below.
• Hard twelve. Hit if the dealer shows a two, three, seven, or higher. Stand only against a four, five, or six.
• Hard thirteen to sixteen. Hit if the dealer shows a seven or higher. Stand against a two through six.
• Hard seventeen and above. Always stand. The bust risk outweighs any benefit from hitting.

Soft hands are more forgiving because the ace absorbs a bad card without busting you. With a soft thirteen through seventeen, hit in most situations. With a soft eighteen, your choice hinges on the dealer's upcard. This situation moves into doubling territory.

When to Stand

Standing means you won’t take more cards. You play your total against the dealer’s final hand.

You stand when two conditions are met. Your hand is strong enough to win a reasonable percentage of the time. The dealer might show a card that raises their bust chance. In that case, you gain by doing nothing.

The dealer bust rule is the core concept behind standing on medium totals.

When the dealer shows a two through six, their hole card is likely a ten-value card. That means they likely have twelve to sixteen. This puts them at a high risk of busting. If you have thirteen to sixteen and the dealer is in a tough spot, you should stand. It might feel like a weak hand, but it's the right move. You are not trying to get to twenty-one. You are waiting for the dealer to bust.

When the dealer shows a seven or higher, that bust probability drops. A seven upcard with a ten underneath gives the dealer seventeen, which means they stand and you lose if you are holding fourteen. In that situation, standing on a weak total is just losing slowly. You hit and accept the risk.

Hard seventeen or above, you always stand regardless of the dealer's upcard. The math does not support hitting seventeen. The risk of busting is too high to justify chasing a stronger total.

When to Double Down

Doubling down means doubling your original bet and receiving exactly one more card. You do it when the situation strongly favours you and you want more money in play.

The best doubling opportunities are on hard ten and hard eleven.

Hard eleven is the strongest doubling hand in the game. Any ten-value card, which makes up roughly thirty percent of the deck, gives you twenty-one. Double against every dealer upcard except an ace.

Hard ten is nearly as strong. Double against any dealer upcard of two through nine. If the dealer shows a ten or ace, just hit instead.

Hard nine is a doubling hand in the right situation. Double when the dealer shows a three, four, five, or six. Those weak dealer upcards combined with your nine give you enough of an edge to put more money down.

Soft doubling is where many players leave money on the table.

Soft thirteen and fourteen, which is ace-two or ace-three, double against a dealer five or six. Soft fifteen and sixteen, which is ace-four or ace-five, double against a four, five, or six. Soft seventeen, which is ace-six, double against a three through six. Soft eighteen, which is ace-seven, double against a three, four, five, or six.

The logic is the same in each case. A soft hand cannot bust on the double, and the dealer is in a weak position likely to result in a bust. You are maximising your return in a situation that already favours you.

When to Split

Splitting applies when you are dealt two cards of the same value. You make a second bet equal to the first. Then, you split the pair into two hands and play each one separately.

Not every pair should be split. Some pairs should always be split. Some should never be split. And some depend on the dealer's upcard.

Always split aces. Two aces together give you a total of twelve or a soft twelve, both weak. Split them and you have two hands each starting with a strong base. Many casinos let you take just one extra card per ace when you split. Still, the value remains.

Always split eights. A pair of eights gives you sixteen, the worst hand in blackjack. Sixteen is too high to hit comfortably and too low to stand with confidence. Splitting turns a losing hand into two hands starting at eight, which is a workable position.

Never split tens. A pair of tens gives you twenty. Twenty wins almost everything. Splitting tens to chase two hands starting at ten is a mistake based on greed. Keep the twenty.

Never split fives. Two fives give you ten, which is a strong doubling hand. Splitting fives turns one good position into two weak ones.

Nines are worth splitting against dealer upcards of two through six and eight or nine. Stand against a seven because your eighteen beats the dealer's likely seventeen. Stand against a ten or ace because the dealer is too strong.

Sevens split against a dealer two through seven. Hit against anything higher.

Sixes split against a dealer two through six. Hit against anything higher.

Fours split only against a dealer five or six, and only in casinos that allow doubling after splitting. Otherwise hit.

Threes and twos split against a dealer two through seven. Hit against anything higher.

The One Chart Worth Having

A single chart documents the basic strategy. It shows every possible hand total and the dealer's upcard. Then, it tells you the right decision to make.

You do not need to memorise all of it immediately. The high-value decisions are the ones to lock in first.

• Always split aces and eights
• Never split tens and fives
• Double hard eleven against everything except an ace
• Double hard ten against two through nine
• Stand on hard seventeen and above
• Hit hard twelve against a two or three
• Stand on hard thirteen through sixteen against a dealer two through six

These rules cover many of the decisions you’ll face. They will guide you toward the correct basic strategy.

What Basic Strategy Does Not Do

Basic strategy does not guarantee wins. It does not turn blackjack into a profitable game. The house edge still exists and it still works against you over volume.

What it does is compress the house edge to its lowest possible value. It removes the decisions where gut feel or superstition costs you money. It slows your losses and helps your bankroll last longer. This gives you a better chance to hit a positive variance run.

Use a flat bet size of one to two percent of your bankroll. Set a clear stop-loss and a profit target you will stick to. With this basic strategy, you can control the game better. Remember, the odds are never in your favor over time.

That is a realistic goal. Not winning. Playing the best version of the game available to you and leaving with your bankroll intact more often than not.

The Three Rules for Every Blackjack Session

1. Set your bet size before you sit down and do not change it based on how the session is going. A losing streak is not a reason to increase your bet. A winning run is not a reason to press. Flat betting keeps the session inside boundaries that your bankroll can survive.
2. Use basic strategy on every hand without exception. Some choices may seem wrong now. For example, you might hit sixteen against a dealer's six. Or, you could split eights if the dealer has a ten. But these moves are often smart over time. One hand is not enough sample size to evaluate a decision. Trust the strategy, not the feeling.
3. Set a stop-loss and a profit target before the session starts and leave when you hit either one. The two biggest mistakes in blackjack are chasing losses and playing too long. Chasing losses happens after a bad streak. Giving back winnings occurs when you keep playing too long. The session endpoint is set before you start, not when your judgment is at its weakest.

Finding hard to keep track of all this use our Blackjack Strategy Tool for quick checks.

As always all suggestions are welcome. If you have any gambling related issues feel free to reach out.

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Gambling carries inherent financial risk. No strategy eliminates the house edge or guarantees profit. Only wager what you can afford to lose, and be aware of the gambling laws in your jurisdiction. If gambling is causing financial or emotional distress, please seek appropriate support. In the UK, contact the National Gambling Helpline on 0808 8020 133. In the US, contact the National Problem Gambling Helpline on 1-800-522-4700. Both are free, confidential, and available around the clock.