Free Z-Score to P-Value Calculator (Normal Distribution) Online
Calculate Z-score from raw score, mean, and standard deviation. Convert Z-values into one-tailed and two-tailed P-values and probability percentages. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter Raw Score (x)
Input test or sample observation.
Enter Mean (μ) & SD (σ)
Input distribution parameters.
View Z-Score & P-Value
Formula: Z = (x - μ) / σ. Get exact area under the normal curve.
Frequently Asked Questions
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