Standard Deviation Calculator

Free online standard deviation calculator to calculate population and sample standard deviation, variance, mean, and sum with step-by-step solutions.

Data Set

Enter numbers separated by commas, spaces, or new lines

Data Type

Population Standard Deviation (σ) Sample Standard Deviation (s)

Data: 1, 2, 3, 4, 5

σ = 1.41

Data: 10, 20, 30, 40

σ = 11.18

Data: 5, 5, 5, 5

σ = 0

Data: 100, 200, 300

σ = 81.65