Z-score Calculator

Calculate Z-scores, convert between Z-scores and probabilities, and find probabilities between two Z-scores

Z-Score Calculator

Formula:Z = (x - μ) / σ

Raw Score (x)

Population Mean (μ)

Standard Deviation (σ)

Enter a Z-score to find all related probabilities.

Z-Score (Z)

Find the probability (area) between two Z-scores.

Left Bound (Z₁)

Right Bound (Z₂)