How do pot odds influence whether a poker player calls or folds?

In poker, pot odds serve as a mathematical guide to determine whether a player should continue in a hand. The fundamental principle of skillful play dictates that a player should only stay in a pot if they likely hold the best hand or if the potential reward offered by the pot outweighs the mathematical probability of improving their hand to the best one.1

To use pot odds, a player compares the ratio of the current pot size to the cost of the bet required to stay in. For example, if there are four chips in the pot and a player must contribute one chip to call, the pot offers 4-to-1 odds. If the mathematical odds against drawing the necessary card to complete a hand (such as a flush or straight) are higher than the odds offered by the pot—for instance, 5-to-1 against completing the hand—the player should fold because the investment is not statistically justified.1

By weighing these probabilities, players can make rational decisions rather than relying on chance alone.1