This calculator provides you with the expected value (xEV) and expected ROI (xROI) of your bet. To use the calculator simply input the odds offered by the sports book then enter the probability of the event happening. For example, if you are placing a money line bet on the Cubs to win this would represent the probability of the Cubs winning. You can get these probabilities directly from your own process, or if you are using Awesemo you will often see this represented “xWin” or expected win probability. Finally input the amount of the bet you are going to place and you will see an expected ROI and dollar amount calculated.