Binomial Distribution Calculator

Calculate binomial probabilities P(X=k), P(X≤k), mean, and variance.

How to Use This Calculator

  1. Enter your n (trials).
  2. Enter your k (successes).
  3. Enter your p (probability of success).
  4. Click Calculate to see instant results with a step-by-step breakdown.
  5. Use the Share button to copy a link with your inputs pre-filled.

⚠️ Results are for informational purposes only. Always verify important calculations with a qualified professional.

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