Average Calculator
Paste or type your numbers separated by commas, spaces, or new lines. This calculator reports the mean alongside the median, mode, range, and both standard deviations, so you can see the centre of your data and how widely it is spread.
- Accurate
- Real-time
- Easy to use
- 100% free
Mean (average)
19.4000
Sum
97.0000
Details
Updates as you typeSeparate values with commas, spaces, or new lines. Negatives and decimals are fine.
Summary
Mean (average)
19.4000
- Count
- 5
- Sum
- 97.0000
- Median
- 18.0000
- Mode
- No mode (all values occur once)
- Minimum
- 12.0000
- Maximum
- 30.0000
- Range
- 18.0000
- Population std dev
- 6.2482
- Sample std dev
- 6.9857
How this is calculated
- Values entered
- 5
- Sum of values
- 97.0000
- Mean = sum ÷ count
- 19.4000
- Sum of squared deviations
- 195.2000
- Population variance (÷ n)
- 39.0400
- Sample variance (÷ n − 1)
- 48.8000
Compare scenarios
See how one change moves the result
- CurrentYour inputs as they stand19.4000Current
Frequently asked questions
What is the difference between mean, median, and mode?
The mean is the sum divided by the count. The median is the middle value once the data is sorted. The mode is the value that appears most often. A few extreme values pull the mean around, while the median barely moves.
Should I use sample or population standard deviation?
Use the population figure when your numbers are the entire group you care about. Use the sample figure, which divides by n minus 1, when the numbers are a sample drawn from a larger group you want to draw conclusions about.
Why does my data set show no mode?
A mode only exists when some value repeats. If every number in the list occurs exactly once there is no most-frequent value, so no mode is reported. When several values tie for the highest count, every one of them is listed.
How do I enter my numbers?
Separate them with commas, spaces, semicolons, or line breaks — a column pasted straight out of a spreadsheet works fine. Negative numbers and decimals are accepted, and anything that is not a number is reported as an error rather than silently skipped.