Acceleration Calculator
Average acceleration = (final velocity − initial velocity) / time.
Open toolZ Score Calculator
Express a value as standard deviations from a supplied mean. The supplied standard deviation must be positive.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate result.
Your result
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Result will appear here
How Z Score Calculator works
Express a value as standard deviations from a supplied mean.
The supplied standard deviation must be positive. This calculates z = (x − mean) / standard deviation; it does not estimate a normal-distribution probability. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
How to use Z Score Calculator
Follow the labelled inputs.
Enter observed value
Replace the example with observed value. The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set population mean, population standard deviation. The supplied standard deviation must be positive.
Tool result
Run, review and save
Select Calculate result. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Z Score Calculator
Check the supplied example
The starting example produces 1.5. Express a value as standard deviations from a supplied mean.
Use your own inputs
Read the labels for observed value and population mean, population standard deviation. The supplied standard deviation must be positive.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Express a value as standard deviations from a supplied mean.
The supplied standard deviation must be positive. This calculates z = (x − mean) / standard deviation; it does not estimate a normal-distribution probability. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
Supported input and limits
Check the stated scope before you run it.
The supplied standard deviation must be positive. This calculates z = (x − mean) / standard deviation; it does not estimate a normal-distribution probability. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
The input stays in this browser. Copy result and Download save the same displayed text.
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Z Score Calculator: common questions
Answers about using Z Score Calculator and understanding its results.
Which inputs does this tool accept?
The supplied standard deviation must be positive. This calculates z = (x − mean) / standard deviation; it does not estimate a normal-distribution probability. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding.
Can I copy or download the result?
Yes. Copy result copies the displayed text, and Download saves the same result as a text file. Calculations run in your browser without an account.
Calculate result with your input
Check the calculated result, then copy or download it.