Probability Calculator

Calculate probabilities for single events, multiple events, combinations, permutations, and common probability distributions.

Number of Favorable Outcomes (for event A):

Total Number of Possible Outcomes:

Probability of Event A, P(A):

Probability of Event B, P(B):

Probability of A and B, P(A ∩ B): (Leave blank if A and B are independent)

Total number of items (n):

Number of items to choose (k):

Calculate: Combinations C(n, k)
Permutations P(n, k)

Number of trials (n):

Probability of success in one trial (p):

Number of successes (k):

Calculate Probability:

Mean ( μ):

Standard Deviation ( σ):

Value (x):

Calculate Probability:

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