Math

Binomial Probability Calculator

Compute exact and cumulative binomial probabilities for n, k, p.

Binomial Probability Calculator computes exact and cumulative probabilities for repeated independent trials. It is useful for acceptance testing, quality analysis, and probability homework. The tool gives fast probability outputs for chosen n, p, and k values. Use it to compare likely and unlikely event outcomes.

Binomial Inputs

Distribution Stats

P(X = k): 0.11718750

P(X <= k): 0.17187500

Expected value: 5.0000

Variance: 2.5000

How to use this tool

Enter number of trials, success probability, and target successes.
Run the calculator for exact/cumulative probabilities.
Interpret results in the context of your threshold decision.

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