CalculatorMath

P-Value Calculator

Estimate a p-value from a z-score using the standard normal distribution.

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Z-score

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How it works

Change any input above and the result updates instantly. The formula or method used by this tool is shown below.

Two-tailed p = 2 × (1 − Φ(|z|))

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About this tool

What does the P-Value Calculator do?+

Estimate a p-value from a z-score using the standard normal distribution.

How does this calculator calculate the result?+

It uses this method: Two-tailed p = 2 × (1 − Φ(|z|))

Are my inputs saved or sent to an account?+

Core CalcForge tools require no account, and most calculations run locally in your browser. Favorites and recent-tool history, when used, stay in this browser.