The average, or arithmetic mean, summarises a set of numbers with a single typical value.
How to use the Average Calculator
- Numbers
Results update as you type, and every field accepts the units shown in its menu.
How it works
Add all values and divide by how many there are. The median is the middle value once sorted.
What each result means
- Average (mean) = [Average (mean)]([Numbers])
- Count = count([Numbers])
- Sum = sum([Numbers])
- Median = median([Numbers])
- Minimum = min([Numbers])
- Maximum = max([Numbers])
Formula
Mean = sum of values ÷ number of valuesWorked example
Inputs — Numbers: 12, 15, 9, 21, 18, 15.
Results — Average (mean) = 15; Count = 6; Sum = 90; Median = 15; Minimum = 9; Maximum = 21.
Key terms
- Mean
- Sum divided by count.
- Median
- Middle value of sorted data.
Frequently asked questions
When is the median better than the mean?
When there are outliers or the data are skewed, such as incomes.
Can I paste from a spreadsheet?
Yes, values on separate lines work.
What formula does the Average Calculator use?
Mean = sum of values ÷ number of values.