TOOLS UNIVERSE / P(A)

Probability Calculator

Use Probability Calculator online for free — fast, clear and without registration.

● Local in your browser · no upload
12%P(A ∩ B)58%P(A ∪ B)60%P(¬A)21.5%P(X = k)

Independent events; binomial model

METHOD

Calculation, assumptions and sources

Formula used

P(A∪B)=P(A)+P(B)−P(A∩B); P(X=k)=C(n,k)pᵏ(1−p)ⁿ⁻ᵏ

What is included

Calculate union and intersection for independent events plus exact binomial probabilities.

Assumptions and limits

Inputs are treated as finite real numbers; rounding and model choices are shown with the result.

GUIDE

Probability Calculator

Calculate union and intersection for independent events plus exact binomial probabilities.

Enter the required values or content, adjust the options and then review the detailed result.

FAQ

Frequently asked questions

What can I do with Probability Calculator?

Calculate union and intersection for independent events plus exact binomial probabilities.

How do I use Probability Calculator?

Enter the required values or content, adjust the options and then review the detailed result.

Are my data uploaded?

No. Inputs and files for this tool are processed locally in your browser.

Is this tool free?

Yes. Every feature is free and requires no registration.

Does it work on mobile?

Yes. The interface is optimized for iPhone, Android, tablets and desktop computers.