Average Calculator

Calculate mean, median, mode, standard deviation, and other descriptive statistics from any set of numbers.

calculateAverage Calculator

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Enter Numbers

Numbers (comma, space, or newline separated)

Tip: Enter numbers separated by commas, spaces, or newlines. Results update in real time as you type.

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Statistics

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Enter numbers to see statistics

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About Average Calculator

The Average Calculator computes a comprehensive set of statistical measures from your data set in real time. Enter any list of numbers and instantly see the mean, median, mode, geometric mean, standard deviation, variance, range, and more. It is perfect for students, researchers, analysts, and anyone who needs quick descriptive statistics without reaching for a spreadsheet.

All calculations run entirely in your browser using JavaScript — no data is sent to any server. The tool accepts numbers separated by commas, spaces, or newlines, making it easy to paste data from spreadsheets, CSV files, or other sources.

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How to Use

Enter Your Numbers

Type or paste numbers into the text area. Separate values with commas, spaces, or newlines.

Load Sample Data (Optional)

Click the Load Sample button to populate the input with example numbers and see how the tool works.

View Results in Real Time

Statistics update instantly as you type — no need to press a calculate button. See mean, median, mode, range, standard deviation, and more.

Analyze and Compare

Review the sorted number list, min/max values, and spread measures to understand your data distribution at a glance.

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Frequently Asked Questions

What is the difference between mean, median, and mode? expand_more

The mean (average) is the sum of all values divided by the count. The median is the middle value when the numbers are sorted in order. The mode is the value that appears most frequently. For symmetric data, all three tend to be similar; for skewed data, they can differ significantly.

What is the geometric mean and when is it useful? expand_more

The geometric mean is the nth root of the product of n numbers. It is useful for averaging rates of change, growth rates, and ratios. Unlike the arithmetic mean, it is only defined for positive numbers. If any value is zero or negative, the geometric mean is not applicable.

What do standard deviation and variance measure? expand_more

Both measure the spread or dispersion of your data. Variance is the average of the squared differences from the mean. Standard deviation is the square root of the variance and is expressed in the same units as your data, making it easier to interpret.

Does this calculator use population or sample standard deviation? expand_more

This calculator uses population standard deviation (divides by N), which is appropriate when your data set represents the entire population. For sample standard deviation (divides by N-1), you would need to adjust the result for small sample sizes.

Is my data stored or sent anywhere? expand_more

No. All calculations happen locally in your browser using JavaScript. No data is transmitted to any server. The tool works fully offline once the page is loaded.