Probability Calculators

Work out chances and counts: single and combined events, conditional probability and Bayes’ theorem, permutations and combinations with exact large answers, and binomial and normal distribution probabilities.

Probability Calculator

Probability, odds and two independent events.

Conditional Probability Calculator

P(A given B) and an independence check.

Bayes Theorem Calculator

Posterior probability with Bayes’ theorem.

Permutation Calculator

nPr: arrangements where order matters.

Combination Calculator

nCr: selections where order does not matter.

Binomial Probability Calculator

Exact and cumulative binomial probabilities.

Normal Distribution Calculator

Normal probabilities and inverse normal.