Pot Odds

Pot odds are the ratio between the curren size of the pot in poker, and the cost required to call a bet. It is used to determine whether a call is methematically profitable.

$$\text{Pot Odds}=\frac{\text{Amount to Call}}{\text{Current Pot Size}+\text{Amount to Call}}$$

To make the EV play, you should only call if

$$\text{Pot Odds}<\text{Odds of Winning}$$