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Free z Score Calculator

This free z score calculator runs entirely in your browser — no signup and no file uploads. Compute a z-score from a value, mean, and standard deviation for stats homework and analysis.

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Inputs

Results

z-score
1.5

How to use this free tool

  1. Enter x, mean, and stdev.
  2. Calculate z.
  3. Interpret sign and magnitude.

Formula

z = (x − μ) / σ

Examples

  • Exam

    Input: x=85 μ=70 σ=10

    Output: z=1.5

Related searches

People looking for a z score calculator often also search for standard score calculator, z-score formula, normalize value mean stdev, statistics z, standard score, and z-score tool. This page covers that search cluster without duplicate URLs.

FAQ

Need stdev first?

Yes—or compute it with Standard Deviation Calculator.

Population vs sample?

Use the stdev that matches your analysis context.

Interpretation?

Z shows how many stdevs a value is from the mean.

How do I use a free z score calculator?

This free z score calculator runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

What is a z score calculator?

This free z score calculator runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

Is there a free online calculator for z score?

This free z score calculator runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

How does the z-score calculator work?

This free z score calculator runs entirely in your browser — no signup and no file uploads. Use the free tool above for instant results — no signup, browser-based, and private.

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