What are the blackjack rules for deciding whether to hit or stand during a game?

In blackjack, players decide whether to hit (take another card) or stand (keep their current hand) based on the total value of their cards and the dealer's upcard. Generally, players should hit if their hand total is 11 or lower, and stand if it is 17 or higher. If the dealer's upcard is a 7 or higher, players should hit until they have a hand total of 17 or higher.