Free Standard Deviation & Variance Calculator (Sample & Population) Online
Calculate Population (σ) and Sample (s) Standard Deviation, Variance, Mean, Sum of Squares, and Margin of Error for any numeric dataset. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Input Numbers
Paste comma, space, or newline-separated numbers into the dataset box.
Select Dataset Type
Choose Sample (divides by n - 1) or Population (divides by N).
Inspect Statistical Table
Review Mean (x̄), Variance (s²), Standard Deviation (s), and Sum (Σx).
Export Metrics
Copy statistical summary or download CSV.
Frequently Asked Questions
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