Standard Deviation Calculator

Calculate population and sample standard deviation with a clear, side-by-side comparison.

Standard Deviation Calculator

Calculate population and sample standard deviation from a list of numbers.

Example: 12, 15, 18, 20, 22

Standard Deviation Calculator

Enter a list of numbers to calculate both population and sample standard deviation. The calculator also shows variance alongside each result so you can compare dispersion in the same view.

  • Supports comma, space, and line-separated inputs
  • Highlights your preferred primary formula
  • Includes mean, count, and range for context
  • Handles small samples with clear guidance

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