Mean and Standard Deviation Calculator

Calculate mean and standard deviation instantly with this free statistical tool

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About This Tool

This Mean and Standard Deviation Calculator is a powerful statistical tool that helps you quickly compute essential descriptive statistics for any dataset. Simply enter your numbers (comma, space, or line separated) and get instant calculations for mean, standard deviation, variance, count, sum, minimum, and maximum values. Perfect for students, researchers, data analysts, and professionals who need to analyze data distributions and variability.

Save your calculation history with a free account

How to Use

Enter your numbers in the input field (separate with commas, spaces, or new lines)
Click the 'Calculate Mean & SD' button to process your data
View detailed results including mean, standard deviation, variance, and data summary
Use the 'Clear Data' button to reset and start over with new numbers

Frequently Asked Questions

Find Quick Answers

What formats can I use to input numbers?

You can input numbers separated by commas (1,2,3), spaces (1 2 3), or new lines. The calculator will automatically parse all formats.

Does this calculator handle decimal numbers?

Yes, the calculator fully supports decimal numbers (e.g., 1.5, 2.75, 3.14159) and negative numbers as well.

What statistical measures does this tool calculate?

The calculator computes mean (average), standard deviation (population and sample), variance, count of numbers, sum, minimum value, and maximum value.

Is there a limit to how many numbers I can calculate?

There's no hard limit, but extremely large datasets may affect browser performance. For normal statistical use cases, the calculator handles hundreds or thousands of values efficiently.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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