Average 13.4
Average Calculator
Use this free average calculator to find the arithmetic mean of a list of numbers and review count, sum, median, mode, range, and sorted values.
Formula steps Examples included Copy results Private history
Average17.2222222222
- Mean
- 17.2222222222
- Median
- 18
- Mode
- 21
- Range
- 15
Steps
- Sort the data: 10, 12, 12, 15, 18, 21, 21, 21, 25.
- Add all values for sum 155 and divide by 9 to get the average.
- Use the middle value for the median and most frequent value for the mode.
- Subtract min 10 from max 25 for the range.
How to use the average calculator
- Enter a list of numbers separated by commas, spaces, or line breaks.
- Press Calculate average to find the arithmetic mean.
- Review the sum, count, median, mode, range, and sorted values for context.
- Use examples, recent answers, or copy the average while checking your work.
Common uses
Find the average score, cost, time, or measurement from a list.
Check homework that asks for arithmetic mean.
Compare average with median, mode, and range.
Quickly summarize a small data set without a spreadsheet.
Examples
Average 18
Average 84.6
Frequently asked questions
Quick answers about formulas, inputs, examples, result copying, and private in-browser history.
What does average mean in this calculator?
Average means arithmetic mean. The calculator adds all values, then divides by how many values you entered.
Can I enter values on separate lines?
Yes. Separate numbers with commas, spaces, semicolons, or new lines. The calculator reads them as one data set.
Why does the calculator also show median and range?
The average can be pulled higher or lower by extreme values. Median and range help you see whether the average tells the full story.
What happens if a value repeats?
Repeated values count each time they appear. If 84 appears twice, it contributes twice to the sum and count.
How many values can I enter?
You can enter up to 1,000 numbers. That keeps the browser calculation fast and readable.
Is my data private?
Yes. The calculation runs in your browser tab and recent answers stay only in that tab while you use the page.
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