The odds of busting in blackjack depend on the value of your hand. The closer your total is to 21, the higher the risk of busting, especially with hands totaling 12 to 16, where the bust probability increases significantly as you draw more cards. For example, with a total of 12, you have about a 31% chance of busting, and this increases as the total rises. When your hand is 17 or higher, the risk of busting continues to grow, with a 21 being the only total that guarantees no bust. Additionally, the dealer's upcard affects these odds, as they have a higher chance of busting if showing a 4, 5, or 6, and a lower chance if showing a 10 or Ace.