Average Calculator
Mean, sum and count from any list of numbers.
Average (mean)
19.2857142857
7 values
Sum
135
Count
7
Minimum
12
Maximum
30
Range
18
Median
18
Mean = sum ÷ count = 135 ÷ 7
What does Average Calculator do?
Paste or type a list of numbers separated by commas, spaces or line breaks to get the average, sum, count, minimum and maximum. It also supports a weighted average when different values carry different importance.
How to Use Average Calculator
- 1Paste your numbersAny separator works — even a whole spreadsheet column.
- 2Switch on weights if neededEnter a matching list of weights for a weighted mean.
- 3Read the resultsAverage, sum and the supporting statistics appear instantly.
Key Features
- Accepts commas, spaces, tabs, semicolons and line breaks as separators
- Paste a spreadsheet column straight in and it just works
- Weighted average mode for grades and scored assessments
- Sum, count, minimum, maximum and range shown alongside the mean
- Ignores blank entries and reports anything it could not parse
Frequently Asked Questions
How do I calculate an average?
Add all the values and divide by how many there are. For 4, 8 and 15: 27 ÷ 3 = 9.
What is a weighted average?
One where some values count more than others. If an exam is 70% of a grade and coursework 30%, scores of 60 and 80 give (60 × 0.7 + 80 × 0.3) ÷ 1 = 66, not 70.
When is the mean a bad summary?
When the data is skewed or has outliers. One extreme value drags the mean away from the typical case — median is more robust. Both are shown by the mean, median and mode calculator.
Can I paste data from Excel?
Yes. Copy a column or row and paste it in. Tabs and line breaks are treated as separators, and non-numeric cells are skipped and reported.
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