What does the Z-Score Calculator work out?

How many standard deviations a value sits from the mean. It is one of the Math tools on Mondo Knows.

How is the Z-Score Calculator calculated?

The maths is short enough to check by hand: z = (x - mean) / standard deviation.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Z-Score Calculator

How many standard deviations a value sits from the mean. Use the free z-score calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Value

Mean

Standard deviation

Mondo says

Z-score

1.5

Percentile93.32%

InterpretationSomewhat unusual

The formula

z = (x - mean) / standard deviation

Z-Score Calculator: common questions

What does the Z-Score Calculator work out?: How many standard deviations a value sits from the mean. It is one of the Math tools on Mondo Knows.
How is the Z-Score Calculator calculated?: The maths is short enough to check by hand: z = (x - mean) / standard deviation.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo also knows

Standard Deviation CalculatorSpread of a data set, population and sample.➗ Math Confidence Interval CalculatorRange that likely contains the true mean.➗ Math Area CalculatorArea of the common shapes.➗ Math Average CalculatorMean, median, mode and range of any list.➗ Math

Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.