Probability Calculator Probability Calculator Single Event Multiple Events Conditional Number of Success Outcomes: Total Possible Outcomes: Calculate Probability Probability of Event 1 (%): Probability of Event 2 (%): Calculation Type: Both Events Occur (AND) Either Event Occurs (OR) Event Does Not Occur (NOT) Calculate Probability Probability of Event A (%): Probability of Event B (%): Probability of Event A given B (%): Calculate Probability