Blackjack odds describe several different things: the chance of drawing a particular card, the chance of busting, and the casino’s long-run advantage. They are related, but they are not interchangeable. Start with the table rules, then use a strategy matched to those rules.
What house edge actually means
House edge is the casino’s expected profit as a percentage of the initial wager over a very large number of hands. It is not your chance of losing the next hand. With suitable rules and accurate basic strategy, blackjack can have a house edge around 0.5%; other rules produce different results. Basic strategy alone can achieve that order of magnitude in a favourable game—card counting is not required.
The player acts first and loses immediately on a bust, even if the dealer would later bust. Player options such as doubling and splitting, and the bonus payout for a natural blackjack, offset part of that disadvantage. The dealer follows fixed rules, including the game’s hit-or-stand rule on soft 17.
A worked example: expected loss is not a forecast
Suppose a game has a 0.5% house edge under the strategy being used. At an initial bet of $10 for 100 rounds, the initial stakes total $1,000. The theoretical loss is $1,000 × 0.005 = $5. Your actual session can finish far above or below that figure; the calculation is neither a loss limit nor a promise that $5 will buy 100 rounds.
Chance of busting when you hit
This table applies to a hard total and uses an infinite-deck approximation: each rank has probability 1/13, with ten-value cards combined at 4/13. A finite shoe’s actual probabilities change as cards are removed. These are chances of busting on the next card, not chances of losing the hand.
| Hard total | Cards that bust | Approximate chance |
|---|---|---|
| 12 | 10, J, Q, K | 30.8% |
| 13 | 9 through 10-value cards | 38.5% |
| 14 | 8 through 10-value cards | 46.2% |
| 15 | 7 through 10-value cards | 53.8% |
| 16 | 6 through 10-value cards | 61.5% |
| 17 | 5 through 10-value cards | 69.2% |
| 18 | 4 through 10-value cards | 76.9% |
| 19 | 3 through 10-value cards | 84.6% |
| 20 | 2 through 10-value cards | 92.3% |
| 21 | Any card | 100.0% |
A hard 11 or lower cannot bust on one additional card. A soft hand contains an ace still counted as 11; that ace can drop to 1, so the table does not apply to it. For example, A–6 plus a 10 becomes hard 17.
Why the dealer’s upcard still matters
A high bust chance does not automatically mean you should stand. Under the 4–8 deck, S17, American-peek rules used in our basic strategy charts, hard 16 stands against a dealer 6, but hits against a dealer 7. Against a dealer 10, surrender is preferred when available; otherwise hit. A pair of eights has its own splitting decision.
Different dealer-bust tables can use different deck counts, soft-17 rules, and assumptions about whether blackjack has already been ruled out. Comparing percentages without those details can be misleading.
Natural blackjack odds and payout differences
In a fresh single deck, a natural requires an ace and a ten-value card in either order: 2 × (4/52) × (16/51) = 4.83%, about one in 20.7 initial hands. For a fresh six-deck shoe, 2 × (24/312) × (96/311) = 4.75%. Neither calculation guarantees how often you will receive one during a session.
| Payout rule | Profit | Total returned including stake |
|---|---|---|
| 3:2 | $15 | $25 |
| 6:5 | $12 | $22 |
The 6:5 version pays $3 less on this $10 natural. A normal winning hand generally pays 1:1, while a push returns the stake. A 21 made after splitting is normally paid as an ordinary hand; confirm the rules.
Frequently asked questions
Does a 0.5% house edge mean I win 49.5% of hands?
No. House edge measures expected money lost relative to initial stakes. Wins, losses, pushes, blackjack payouts, doubles and splits all affect that calculation.
Can basic strategy guarantee a winning session?
No. It chooses the best expected-value decisions for the specified rules. Short-term results remain unpredictable.
Does a run of losses make a win due?
No. A losing streak does not create a recovery entitlement. Card removal can change shoe probabilities, but a streak alone is not a strategy.
Should I use the bust table instead of a strategy chart?
No. The bust table explains one risk. A strategy chart also accounts for the dealer’s upcard and the expected results of available actions.
Sources and next steps
Rules and strategy reference: Wizard of Odds blackjack rules and its rule-specific strategy calculator. Examples are educational; check the rules displayed by your game.
Watch the difference between one hand and an average.
Play ten quick hands and record wins, losses and pushes. This small sample demonstrates variation; it cannot measure the house edge or predict your next result.
Free independent practice. No account, money or prizes. Practice results do not predict real-money outcomes.