Free Standard Deviation & Variance Calculator Online
Compute sample standard deviation (s), population standard deviation (σ), variance, mean, median, range, and sum of squares with step-by-step arithmetic. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Enter Numbers
Input numbers separated by commas or spaces.
Select Mode
Choose Sample (divides by n-1) or Population (divides by N).
View Results
Inspect standard deviation, variance, and statistical summary.
Frequently Asked Questions
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