Standard Deviation Calculator
Paste or type a list of numbers — separated by commas, spaces, or new lines — and get the spread of your data.
Data
Result
Enter at least two numbers and press Calculate.
Sample vs. population
Use sample (divides by n − 1) when your numbers are a subset drawn from a larger group; use population (divides by n) when they are the entire group. Sample is the usual choice for measured data.