Standard deviation calculator
ClientPopulation standard deviation σ for a pasted number list—local statistics.
σ = 2.000000
Nearby workflows on Toolcore
- Variance calculator — Population variance σ² for pasted numbers—companion to standard deviation. when units or numeric output should be checked on a related calculator.
- Mean, median & mode — Paste numbers (comma or whitespace separated) to get mean, median, and modes. when units or numeric output should be checked on a related calculator.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
- Percentage calculator — Percent of a value, ratio to percent, and percent change—no server round-trip. when units or numeric output should be checked on a related calculator.
About this tool
Population standard deviation measures spread around the mean—paste a batch of readings to get σ.
Common use cases
- Use standard deviation calculator during homework or spreadsheet spot checks.
- Copy results into notes without sending data to a server.
Common mistakes to avoid
Wrong units
Keep length, area, and volume inputs in consistent units.
FAQ
Is data uploaded?
No—all math runs locally in your browser.
More tools
Related utilities you can open in another tab—mostly client-side.
Variance calculator
ClientPopulation variance σ² for pasted numbers—companion to standard deviation.
Mean, median & mode
ClientPaste numbers (comma or whitespace separated) to get mean, median, and modes.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.
Percentage calculator
ClientPercent of a value, ratio to percent, and percent change—no server round-trip.