Average Calculator

What this calculator does

The Average Calculator takes a list of numbers and returns the mean, median, sum, count, minimum, maximum, and range. It is useful for grades, test scores, measurements, expenses, and any other list where you need a quick summary.

How to use this calculator

1. Enter numbers separated by commas, spaces, or new lines.
2. Negative numbers and decimals are supported.
3. Click Calculate.

Formula

Mean   = sum of all values ÷ number of values
Median = middle value after sorting (average of the two middle values for an even count)
Range  = maximum − minimum

What the results mean

The default list is 10, 20, 30, 40. It has four values, a sum of 100, and a mean of 25. The median is also 25 because the two middle values are 20 and 30. The range is 40 − 10 = 30.

Assumptions and limitations

• Only finite numbers are accepted.
• The calculator does not treat blank entries as zero; they are ignored.
• The median shown here is the arithmetic median, not a weighted median.
• Very large lists may be easier to process with a spreadsheet.

Frequently asked questions

What is the difference between mean and median?

The mean is the sum divided by the count. The median is the middle value after sorting, so it is less affected by a few very large or very small values.

Can I enter negative numbers?

Yes. Negative and decimal values are supported.

Does the order of the numbers matter?

No. The mean, median, minimum, maximum, and range are all computed after the list is parsed, so order does not change the result.

Source

Reference: Average Calculator.