Probability Calc provides an easy and intuitive way to discover the probability of things happening around you. It works by allowing you to input any number of potential choices for things that could happen in a given 'Scenario' and makes it as easy as clicking a button to mark down that one of the choices has occurred. Given just a little bit of time recording the events, you can quickly get an idea of the odds of a certain outcome happening.

Probability Calc also allows you to save any scenario and come back to it later if you want to pick up where you left off.

From checking to see if a die is truly random to seeing what the most common color of car that passes is, there are an infinite number of possibilities for things to observe. So what will you try first?