Probability Calculator Online

Probability Calculator Online. Favorable over total outcomes. Fast, accurate, private.

Independent events A and B.

P(A)

P(B)

P(A and B)0.120000

P(A or B)0.580000

n (combinations)

nCr

120

C(n, r) = n! / (r!(n−r)!)

Steps

Online probability calculator — P = favorable outcomes / total outcomes.

Are results official?

No — quick estimates only. Confirm with your bank or provider.

Is data saved?

No. Calculations run in your browser.

Where is the full tool?

Each satellite links back to the main hub calculator.