Statistics Calculator
Calculate mean, median, mode, standard deviation, variance, and other statistical measures from data sets. Perfect for data analysis, research, and academic work with comprehensive statistical insights.
Supports decimals and negative numbers
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Complete Guide: Statistics Calculator
Everything you need to know about using this tool effectively
The Statistics Calculator computes descriptive statistics from a set of numbers you enter. It calculates the mean (average), median (middle value), mode (most frequent value), range, variance, standard deviation, and quartiles. You enter numbers separated by commas or spaces and the tool displays all statistics instantly. All processing happens in the browser.
This tool takes a list of numbers and applies standard statistical formulas. The mean is the sum divided by the count. The median is the middle value when sorted. The mode is the most frequently occurring value. Standard deviation measures how spread out the data is from the mean. Variance is the square of the standard deviation.
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Enter your numbers
Type or paste numbers separated by commas or spaces.
Calculate
Click Calculate. The tool computes all statistics.
Review the results
See mean, median, mode, standard deviation, variance, range, and quartiles.
Copy the results
Copy the statistics for use in reports or assignments.
The mean is sensitive to outliers. Use the median when your data has extreme values.
Standard deviation tells you how spread out the data is. A low SD means data is clustered near the mean.
If there is no repeating value, the mode is reported as 'no mode'.
Enter at least 3 data points for meaningful statistics.
What statistics are calculated?
Mean, median, mode, range, variance, standard deviation, sum, count, minimum, maximum, and quartiles (Q1, Q3).
What is the difference between mean and median?
The mean is the arithmetic average (sum divided by count). The median is the middle value when all numbers are sorted. The median is less affected by extreme outliers than the mean.
Is my data sent to a server?
No. All calculation happens in your browser using JavaScript. Nothing is transmitted.
How is standard deviation calculated?
The tool calculates the sample standard deviation using the formula: square root of the sum of squared deviations from the mean, divided by (n-1).
Can I use decimal numbers?
Yes. Enter any numbers including decimals and negative values.
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