Standard Deviation Calculator
Calculate mean, variance and population or sample standard deviation from a number list.
Instructions: Standard Deviation Calculator
Follow these steps to get a reliable result without unnecessary setup.
- 1
Paste or type a comma- or space-separated list of numeric values.
- 2
Choose the options in Standard Deviation Calculator that match your intended output, such as units, format, mode, range or quality when those controls are available.
- 3
Run Standard Deviation Calculator and review the displayed result, preview or validation message before proceeding.
- 4
Check the entered units, dates, decimal placement and any assumptions before relying on the result.
- 5
Use the available reset, copy or download action in Standard Deviation Calculator when you are satisfied with the result; only actions supported by this tool are shown.
About this tool: Standard Deviation Calculator
Paste comma- or space-separated values and calculate count, mean, variance and standard deviation using either population or sample formulas.
Use it to compare scenarios quickly while keeping the relevant values, units, dates or rates visible on one page.
Standard Deviation Calculator is presented in the shared NexterHub tool layout so the working controls stay near the top while the method, example, limitations and related utilities remain available below the result.
How it works
Variance is the average squared distance from the mean; sample mode divides by n−1 while population mode divides by n.
Practical example
For 2, 4, 4, 4, 5, 5, 7, 9, population standard deviation is 2.
Important notes
Check the entered units, dates, decimal placement and any assumptions before relying on the result.
Privacy & processing
The calculation is performed in the browser from the values you enter.
Frequently asked questions
What does Standard Deviation Calculator do?
Calculate mean, variance and population or sample standard deviation from a number list.
How do I use Standard Deviation Calculator?
Start with the main input step: Paste or type a comma- or space-separated list of numeric values. Then choose any relevant options, run the tool and review the result.
How does Standard Deviation Calculator calculate or process the result?
Variance is the average squared distance from the mean; sample mode divides by n−1 while population mode divides by n.
What should I check before using a result from Standard Deviation Calculator?
Check the entered units, dates, decimal placement and any assumptions before relying on the result.
Does Standard Deviation Calculator send my input to a NexterHub server?
The calculation is performed in the browser from the values you enter.
Can I use Standard Deviation Calculator on a phone or tablet?
Yes. Standard Deviation Calculator uses the responsive NexterHub tool layout, so controls and results adapt to smaller touch screens.