Z-score Calculator

The Z-score calculator can determine the z-value of a normal distribution, given raw score, population mean, and standard deviation.

Find Z-score Using:

z =  
(x - μ)
σ

Probabilities:

z =  
(x̄ - μ)
(σ / √n)
z =  
(x̄ - μ)
(σ / √n)