Z-score
Calculate Z-score instantly with the exact formula and a worked example. Free online calculator — no signup.
Z-score
Value x
Mean μ
Std. deviation σ
Z-score
1.5
More about: Z-score
What it calculates
The “Z-score” calculator computes Z-score from 3 parameters: value x, mean μ, std. deviation σ.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Value x = 75, Mean μ = 60, Std. deviation σ = 10 the result is 1.5 (Percentile ≈ 93,32%).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.