About the average calculator
“Average” can mean different things. The mean adds everything and divides; the median is the middle value; the mode is the most common. This calculator shows them all, plus range and standard deviation, so you can describe any set of numbers properly.
How to use this calculator
- Paste or type your numbers, separated by commas, spaces, or new lines.
- Read the summary statistics.
Worked examples
- Data: 4, 8, 15, 16, 23, 42
- Sum 108 ÷ 6 = 18
- Median: (15 + 16) ÷ 2 = 15.5
Mean 18, median 15.5.
Measurement guidance
Mean or median?
If a few very large or small values skew the data — like home prices — the median often describes a typical value better.
Frequently asked questions
What if no number repeats?
Then there is no mode.
Can I paste from a spreadsheet?
Yes. Copied columns separate values with new lines, which works.
Are negative numbers allowed?
Yes.