Is the Standard Deviation Calculator free?

Yes, our Standard Deviation Calculator is completely free and requires no login.

Can I use the Standard Deviation Calculator on mobile?

Yes, the Standard Deviation Calculator is mobile-friendly and works on all devices.

How accurate is this Standard Deviation Calculator?

It provides precise statistical calculations based on the data values you enter.

Why use an online Standard Deviation Calculator?

An online Standard Deviation Calculator helps students and professionals analyze data variation quickly.

Standard Deviation With Mean Calculator - Calculate STD

Calculate Standard Deviation

Statistical Results

Your statistical results will appear here after calculation

ToolsMaverick Standard Deviation With Mean Calculator

Standard deviation (σ) measures the amount of variation or dispersion in a set of values. A low standard deviation indicates that the values tend to be close to the mean, while a high standard deviation indicates that the values are spread out over a wider range.

How to Use This Calculator:

Enter Numbers: Input a series of numerical values separated by commas (e.g., 5, 10, 15, 20, 25)
Click "Calculate": The tool will compute the sample standard deviation, mean (average), and count of numbers

Example: For the dataset [10, 12, 14, 16, 18]:

Mean (μ) = (10+12+14+16+18) / 5 = 14.0
Variance (s²) = Σ(xi - μ)² / (n-1) = 10.0
Standard Deviation (σ) = √10.0 ≈ 3.1623

Note: This calculator computes the sample standard deviation (dividing by n-1), which is commonly used when working with a sample of a population. For the population standard deviation (dividing by n), a slightly different formula is used. Results are precise to several decimal places.