Probability Distribution Plotter

See the shape of any distribution, adjust parameters in real time, and get the exact probability you need — all in your browser.

Normal

Mean (μ)0

Std Dev (σ)1

Tap a slider to take control

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Choose the question you want to answer first. Each workflow opens with sensible defaults you can refine.

Compute P(a ≤ X ≤ b) with live bounds and shading.

Set p and read x_p where F(x_p) = p.

Evaluate tail probability P(X > x) in survival view.

Jump to popular distributions:Normal Binomial Poisson Exponential

Add multiple parameter sets and see how they differ. A dedicated difference chart highlights where one dominates.

From Normal and Binomial to Weibull, Cauchy, and Pareto — every distribution has the same controls, formulas, and tools.

Draw thousands of random samples and watch the histogram converge to the theoretical PDF.