Average Calculator
Paste numbers separated by commas, spaces or new lines to instantly see mean, median, mode, range and standard deviation.
What is the Average Calculator?
The Average Calculator takes a list of numbers separated by commas, spaces or new lines and returns the mean, median, mode, range, sum, minimum, maximum and standard deviation. It is the fastest way to summarise a small dataset without opening a spreadsheet.
These five or six statistics answer almost every everyday question about a bunch of numbers: what is the typical value (mean, median, mode), how spread out is it (range, standard deviation), what are the extremes (min, max) and how large is it (count, sum).
The tool works entirely on-device, so private numbers — salaries, test scores, sales figures — never travel to a server.
How to use the Average Calculator
- 1Paste or type your numbers into the text area.
- 2Separate them with commas, spaces or new lines — the tool accepts all three.
- 3Watch the number of detected values update below the box.
- 4Scroll down to the stat cards for a full summary.
- 5Edit the input to see the statistics recalculate live.
Key features
- Mean, median, mode, range
- Sum, count, min, max
- Standard deviation (population)
- Accepts any mix of comma / space / newline separators
- Ignores non-numeric tokens gracefully
- Runs offline
Examples
Test scores
For 78, 82, 91, 88, 76 → mean 83, median 82, range 15, stddev ~5.7.
Sales figures
A shop that sold 12, 15, 15, 18, 22 units per day has a mode of 15 and average of 16.4.
Why use this tool
- Instant statistics without a spreadsheet
- Educational — shows several kinds of "average" side by side
- Handles messy paste (mixed separators)
- Free and private
- Great for exam prep and quick research
Common use cases
- Averaging exam or assignment scores
- Summarising survey responses
- Analysing daily sales numbers
- Estimating monthly expenses
- Comparing benchmark run times
- Teaching statistics basics
Frequently asked questions
What is the difference between mean, median and mode?
Mean is the arithmetic average, median is the middle value when sorted, mode is the most frequent value.
Which standard deviation is used?
Population standard deviation (divide by N). For sample stddev, multiply by √(N/(N−1)).
Can I paste numbers from Excel?
Yes — Excel copies with tabs or new lines and both are recognised.
Does the tool ignore bad tokens?
Yes. Words and symbols are silently skipped; only valid numbers count.
Are my numbers uploaded?
No — the tool runs entirely in your browser.