Enter the chance of event A occurring and the change of both A and B occurring into the calculator. The calculator will determine the probability of event B occurring.

## Conditional Probability Calculator

The following formula can be used to calculate the probability of an event occurring.

Pb = Pab/Pa

- Where Pb is the probability of event B occurring
- Pab is the probability of both A and B occurring
- Pa is the probability of even A occurring

## Conditional Probability Definition

A conditional probability is a chance of two dependent events occurring.

## How to calculate a conditional probability?

How to calculate a conditional probability?

**First, determine the probability of a**This is the percent chance of the event a happening.

**Next, determine the probability of Pab**This is the chance of both events A and B both occurring.

**Finally, calculate the chance of B**Calculate the probability of B using the information from steps 1 & 2, along with the equation presented above.

## FAQ

**What is conditional probability?**

Conditional probability is an event in which the chance of that event occurring is directly tied to the chance of another event.

**What is probability?**

Probability is another way of same the chance or likelihood of a specific scenario happening.