Raw Score, x
Population Mean, μ
Standard Deviation, σ

Z-score and Probability Converter

Please provide any one value to convert between z-score and probability. This is the equivalent of referencing a z-table.

Z-score, Z
Probability, P(x<Z)
Probability, P(x>Z)
Probability, P(0 to Z or Z to 0)
Probability, P(-Z<x<Z)
Probability, P(x<-Z or x>Z)

Probability between Two Z-scores

Use this calculator to find the probability (area P in the diagram) between two z-scores.

Left Bound, Z1
Right Bound, Z2