Probability Calculator

• probability calculator supporting basic probability, combinatorics, conditional probability, probability distributions, and expected value calculations
• Includes permutations, combinations, binomial distribution, normal distribution, Poisson distribution, Bayes theorem, and more

1. Open the tool page — no installation needed
2. Select a calculation type (basic probability, combinatorics, conditional, distributions, expected value) and enter the parameters — or click "Example" to auto-fill
3. Click "Calculate" to get the result, then copy it with one click; use "Reset" to clear

• This tool is completely free and requires no sign-up
• Everything runs locally in your browser — your data never leaves your device

Free online probability calculator supporting basic probability, combinatorics, conditional probability, probability distributions, and expected value calculations. Includes permutations, combinations, binomial distribution, normal distribution, Poisson distribution, Bayes theorem, and more.

Open the tool page — no installation needed Select a calculation type (basic probability, combinatorics, conditional, distributions, expected value) and enter the parameters — or click "Example" to auto-fill Click "Calculate" to get the result, then copy it with one click; use "Reset" to clear

This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device

Yes, Probability Calculator is completely free. No download or installation required — it runs right in your browser.