Free online tool

Probability Distribution Explorer

Explore probability distributions with charts. Change the settings and see how the curve and chances change.

Works on your deviceNo account neededJSON / SVGOpen workspace ↓

What do the two distribution parameters mean?

For Normal, A is the mean and B the standard deviation. For Uniform they are the lower and upper bounds. For Exponential, A is the rate. For Binomial, A is the trial count and B the success probability. For Student t, A is the degrees of freedom.

Your input

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Your result

A little clarity, right here.

Start with your own content or load the example. Your result will appear here.

Three simple steps

How to use Probability Distribution Explorer

  1. Choose your input and adjust the options.

  2. Review the preview and run the tool.

  3. Download the result and keep your original.

Common questions

Good to know

Understand the result.
Keep the original.

Is this tool free, and are my files uploaded?

This tool is free with no account required. The work happens in your browser. Your input and files are not sent to a processing server.

What are the limits and details?

Density is not probability at a single point for continuous distributions. Binomial uses discrete probability mass and an integer trial count up to 500. Quantile probabilities must be strictly between zero and one.

Limits: 500,000 characters per text field; files up to 20 MB each, 10 files and 50 MB total. Processing stops after 30 seconds.