Probability Calculator

Probability questions sound simple until you have to decide whether order matters, then combinations and permutations start to blur together. This calculator keeps them straight, working out basic probabilities along with the number of ways to combine or arrange items. No more second-guessing which formula applies.

Enter your values and the tool computes the probability, combinations, or permutations you need. It's free, runs in your browser, and needs no signup. Whether you're tackling a statistics assignment, sizing up the odds of an event, or counting how many arrangements are possible, it gives you a clear number without the formula juggling.