Tools

Probability Calculator

How to Use

  1. Enter the number of favorable outcomes and total possible outcomes.
  2. Click "Calculate".
  3. View the resulting probability as a fraction, decimal, and percentage.

Frequently Asked Questions

How is probability calculated?

Probability is calculated as the number of favorable outcomes divided by the total number of possible outcomes.

Can I calculate the probability of multiple events?

Yes, you can calculate the combined probability of two or more independent events happening together.

What format is the result shown in?

Probability is expressed as a value between 0 and 1, or equivalently as a percentage between 0% and 100%.