CalculatorMath

Standard Deviation Calculator

Calculate population standard deviation for a list of numbers.

Instant · no account

Input

Enter your values

Numbers (comma, space or newline separated)

Method

How it works

Change any input above and the result updates instantly. The formula or method used by this tool is shown below.

σ = √(Σ(x − mean)² ÷ N)

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Quick answers

About this tool

What does the Standard Deviation Calculator do?+

Calculate population standard deviation for a list of numbers.

How does this calculator calculate the result?+

It uses this method: σ = √(Σ(x − mean)² ÷ N)

Are my inputs saved or sent to an account?+

Core CalcForge tools require no account, and most calculations run locally in your browser. Favorites and recent-tool history, when used, stay in this browser.