What is the arithmetic mean?

The arithmetic mean is the sum of all numbers in a data set divided by the count of numbers. It is the most common form of average and is used to find the central value of a set.

How many numbers can I enter?

There is no fixed limit. The calculator handles as many numbers as you can paste into the input box, bounded only by your browser's memory.

What separators are supported?

You can separate numbers with commas, spaces, tabs, or new lines. The parser strips all non-numeric characters except minus signs and decimal points, so copy-pasting from a spreadsheet or CSV works directly.

Does it handle negative numbers and decimals?

Yes. Negative numbers (e.g. -5) and decimal numbers (e.g. 3.14) are fully supported. Make sure to use a period as the decimal separator.

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

The mean is the numerical average (sum divided by count). The median is the middle value when numbers are sorted. The mode is the most frequently occurring value. For symmetric distributions they are equal, but they differ for skewed data.

Is my data sent to a server?

No. All calculations happen entirely in your browser using JavaScript. No data leaves your device.

Mean Calculator

Name: Mean Calculator
Availability: InStock
Author: Nham Vu

Enter a list of numbers and instantly get the arithmetic mean, count, sum, min, and max.

Enter Numbers

Separate numbers with commas, spaces, or new lines.

Results

Enter numbers and click Calculate.

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Summary

Enter a list of numbers and instantly get the arithmetic mean, count, sum, min, and max.

How it works

Type or paste your numbers into the input box, separated by commas, spaces, or new lines.
The calculator parses all valid numeric values from your input automatically.
It sums all the numbers and divides by the count to compute the arithmetic mean.
The result panel shows the mean, count, sum, minimum, and maximum values.
Click "Copy Mean" to copy the result to your clipboard.
Click "Clear" to reset the input and start over.

Use cases

Calculate the class average score from a list of student grades.
Find the mean of a data set during statistical analysis.
Quickly average a column of numbers from a spreadsheet.
Compute the average price from a list of quotes or bids.
Determine the mean response time from a set of performance measurements.
Average temperature readings or sensor data over a period of time.
Find the mean of experimental results in scientific work.
Calculate the average rating from a list of user scores.

Frequently Asked Questions

Last updated: 2026-06-10 · Reviewed by Nham Vu