Z-Score & Normal Distribution Calculator
Mode
Raw value → Z-score
Z-score → Percentile
Percentile → Z-score
Value (x)
Mean (μ)
Std Dev (σ)
Z-score
Percentile (1–99)
Calculate
Z-score
—
Percentile
—
Probability P(Z≤z)
—
Two-tailed p-value
—
Interpretation
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