Standard Deviation Calculator
Measures the spread of values around their average.
Lilu Baba's Standard Deviation Calculator measures how spread out your numbers are from their average, using the population standard deviation formula.
How to use this calculator
- Enter your set of numbers, separated by commas or spaces.
- The standard deviation (population) updates instantly.
Standard Deviation
—
Variance
—
Average (Mean)
—
FAQ
Standard Deviation Calculator — frequently asked questions
This calculates population standard deviation (dividing by n). For sample standard deviation (dividing by n−1), the difference is small for large datasets.
A higher standard deviation means the values are more spread out from the average; a lower one means they are clustered closer together.