How it works
Fill in the 2 fields above and Geometric Distribution Calculator calculates the result instantly, recalculating as you change any value. It applies the formula P = (1−p)^(k−1) · p. The math runs locally in your browser — nothing is sent to a server.
Formula
P = (1−p)^(k−1) · pExamples
- Success probability 20 %, Trial of first success (k) 3 → P(X = 3): 12.8%
Frequently asked questions
How do I use the Geometric Distribution Calculator?
Enter your values in the 2 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Geometric Distribution Calculator use?
It uses P = (1−p)^(k−1) · p. The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Geometric Distribution Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Geometric Distribution Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on statistics and the rest of the platform, you can use it as often as you like.
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