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Average Calculator: Mean, Median, Mode and Range

This free average calculator finds the mean, median, mode, range, sum and count of any list of numbers. Paste your numbers separated by commas, spaces or new lines and read all the results at once.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

An average is a single number that stands for a whole list. Most people mean the mean, but statistics has three common averages and each tells a different story. Seeing all three together shows whether your data is balanced or skewed.

Paste your list, press the button and get the mean, median, mode, range, sum, count, smallest and largest value.

How to Use This Tool

  1. Paste or type your numbers into the box, separated by commas, spaces or lines.
  2. Press Calculate.
  3. Read the mean, median and mode in the table.
  4. Compare the mean and median: a big gap means the data is skewed.

How the Calculation Works

Mean = sum of all values ÷ number of values. Median = the middle value after sorting; with an even count it is the mean of the two middle values. Mode = the most frequent value. Range = largest minus smallest.

Negative numbers and decimals are read correctly. Numbers with a thousands comma, such as 1,200, are not supported inside a list because the comma is the separator; type 1200 instead.

Worked Example

For 12, 15, 9, 22, 15, 18 the sum is 91 and the count is 6, so the mean is 15.1667. Sorted, the list is 9, 12, 15, 15, 18, 22, so the median is (15 + 15) ÷ 2 = 15. The mode is 15 and the range is 22 − 9 = 13.

Common Uses

  • Exam marks and class results.
  • Monthly sales, expenses or website visits.
  • Sports statistics such as scores or lap times.
  • Quick checks on survey answers.

Tips and Common Mistakes

  • Report the median for skewed data such as salaries.
  • A list with one entry has no spread: the mean, median and mode are the same number.
  • For a weighted result, use the weighted average calculator instead.

Next, you may need the standard deviation calculator, weighted average calculator, z-score calculator, percentage calculator.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

The mean is the sum divided by the count. The median is the middle value when the numbers are sorted. The mode is the value that appears most often.
When a few extreme values pull the mean away from the typical case, such as incomes or house prices. The median is not affected by outliers.
Then the list has more than one mode. The tool shows all of them. If no value repeats, it says there is no mode.
Any spaces, commas, semicolons or new lines work. Text that is not a number is ignored.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.