Ace

In blackjack, the Ace is special because it can count as 1 or as 11\. This gives your hand flexibility that no other card has. Most of the time, the Ace counts as 11 if that total is closer to 21 without going over. If counting it as 11 would make you bust, the Ace automatically becomes 1 instead. You do not need to announce the value. It is simply scored in the most helpful way for your current hand. For example, Ace \+ 9 can be 10 or 20\. If you have Ace \+ 9 and then draw a 5, your total becomes 15 because the Ace switches to 1 to avoid a bust.

Soft hands vs hard hands with an Ace

When there is an Ace in your hand, you will often hear “soft” and “hard” totals. A soft hand means the Ace is currently counted as 11 without busting. This is useful because you have a safety cushion. If you hit and the total would go over 21, the Ace can drop to 1, and you can stay in the hand. Example: Ace \+ 6 is a soft 17 because it can be counted as 7 or 17\. If you then draw a 10, the total does not become 27\. The Ace switches to 1 and the hand becomes a hard 17\. A hard hand means the Ace is already counted as 1, or there is no Ace at all, so you do not have that built-in cushion.

Key outcomes the Ace creates at the table

The Ace has its biggest impact in two situations: when it forms blackjack and after a pair of Aces is split. Blackjack is an initial two-card hand consisting of an Ace and any 10-value card: a 10, Jack, Queen, or King. It beats any dealer total of 21 or less unless the dealer also has blackjack.

Blackjack often pays 3:2. On a $10 bet, that is $15 profit, and you also get your $10 stake back.
Some tables pay 6:5 instead. On a $10 bet, that is $12 profit, which lowers your return.
Two Aces can be split into two hands. Many casinos give only one card to each split Ace, and further hits may be restricted.