What is the difference between mean and median?

The mean is the arithmetic average — the sum of all values divided by the count. The median is the middle value when the list is sorted. The median is less affected by extreme outliers than the mean.

What happens when there is no mode?

If every number appears the same number of times, there is no mode and the tool will display "None". If multiple values tie for the most frequent, all of them are listed as the mode.

Is this sample or population standard deviation?

This tool computes population standard deviation (divides by n). It is the most common choice when your list represents the complete dataset rather than a sample drawn from a larger population.

What separators can I use between numbers?

You can separate numbers with commas, spaces, tabs, or newlines — or any combination. The tool normalizes all separators automatically.

Can I enter negative or decimal numbers?

Yes. Negative numbers (e.g. -5) and decimals (e.g. 3.14) are fully supported in all calculations.

Is the average the same as the mean?

In everyday use, yes: "average" means the arithmetic mean. In statistics the median and mode are also kinds of average, which is why this calculator shows all three. The median is better than the mean when a few very large or small values pull the mean away from a typical value.

How do I average grades or scores that have different weights?

A plain average treats every number equally. If a final exam counts 40% and homework 60%, multiply each score by its weight and add them, or use the Weighted Average Calculator, which does this for you.

Average Calculator

Enter a list of numbers and instantly get the mean, median, mode, range, and standard deviation.

The average (mean) is the sum of the numbers divided by how many there are.

Enter Numbers

Numbers (comma, space, or newline separated)

Enter numbers on the left and click Calculate

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Quick answer

The average (mean) is the sum of the numbers divided by how many there are. For 85, 90, 78 and 92 the sum is 345 and the count is 4, so the average is 345 ÷ 4 = 86.25.

Examples

Numbers: 4, 8, 15, 16, 23, 42	Result
Mean (average)	18
Median	15.5
Mode	None (no value repeats)
Range	38
Standard deviation (population)	12.32

Paste your numbers to get every statistic at once.

Summary

Enter a list of numbers and instantly get the mean, median, mode, range, and standard deviation.

How it works

Type or paste your numbers into the input box, separated by commas, spaces, or newlines.
Click "Calculate" to compute all averages at once.
Read the mean, median, mode, range, and standard deviation from the results panel.
Click the copy icon next to any result to copy that value.
Click "Reset" to clear everything and start over.

Use cases

Find the average score across a set of test results.
Calculate the median home price from a list of sales data.
Determine the mode of survey responses to find the most common answer.
Measure the spread of experimental data using range and standard deviation.
Verify homework answers for descriptive statistics assignments.
Quickly summarize a dataset without opening a spreadsheet.

Frequently Asked Questions

Last updated: 2026-05-28 · Reviewed by Nham Vu