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Average (Mean) Calculator

The average calculator finds the mean of a list of numbers — perfect for averaging test scores or marks. Type or paste your numbers separated by commas or spaces and it instantly returns the mean, along with the count, sum, minimum and maximum so you can sanity-check the result. Everything runs in your browser.

Calculator

Calculator inputs

Result

The formula

Mean = sum ÷ count

Add all the numbers together, then divide by how many there are. The calculator also reports the count, sum, smallest and largest values. Blank or non-numeric entries are ignored, and an empty list simply shows a hint rather than an error.

Worked example

For the marks 82, 91, 76, 88 and 95:

  • Sum = 82 + 91 + 76 + 88 + 95 = 432
  • Count = 5
  • Mean = 432 ÷ 5 = 86.4
  • Min = 76, Max = 95.

Frequently asked questions

How do I separate the numbers?
Use commas, spaces or new lines — any mix works. Non-numeric text is skipped.
Is this the mean or the median?
This is the mean (arithmetic average): sum divided by count. It is not the median (middle value).
Does it weight anything?
No — every number counts equally. For a weighted average of scores by importance, use the weighted grade calculator.

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