🎲

Probability Calculator

Single and multiple event probability. Everything happens locally in your browser, so it is fast and completely private. Nothing you enter is uploaded.

Free · no sign-up Calculators

About the Probability Calculator

Single and multiple event probability. Everything happens locally in your browser, so it is fast and completely private. Nothing you enter is uploaded.

Frequently asked questions

Is this tool free?
Yes — it is completely free, with no sign-up or watermark.
Is my data private?
Yes. It runs entirely in your browser, so nothing you paste or upload ever leaves your device.

More tools

➗ Percentage Calculator Work out percentages, increases and differences. ⚖️ BMI Calculator Calculate your Body Mass Index in metric or imperial. 🎂 Age Calculator Find an exact age in years, months and days. 🏦 Loan / EMI Calculator Estimate monthly loan payments and total interest.
Browse all tools →