How to use it
- Enter your numbers. Paste or type them into the box. You can separate them with commas (
12, 7, 22), spaces (12 7 22), new lines, or any mix of the three. - Read the results. The eight stat cards update the moment you stop typing — no button to press. You get the count, sum, mean, median, mode, minimum, maximum and range together.
- Copy or reset. Use Copy results to grab all eight figures as text, Load sample to see an example, or Clear to start over.
Decimals (3.14), negative numbers (-5) and scientific notation (1.2e3) are all accepted. A leading currency symbol such as $ is stripped automatically, and any token that is not a number is quietly skipped and counted in the small note under the box.
Mean, median and mode explained
These three are the classic measures of central tendency — different answers to the question “what is a typical value?” The mean (the everyday “average”) adds every number and divides by how many there are. The median sorts the numbers and takes the middle one — or the average of the two middle ones when the count is even. The mode is simply the value that shows up most often; a data set can have one mode, several, or none at all if every value is unique.
Why have all three? Because the mean can be pulled sharply by a single outlier. If nine people earn $40,000 and one earns $1,000,000, themean salary looks like $136,000 even though the median — a far more honest “typical” figure — stays at $40,000. Seeing the mean and median side by side instantly tells you whether your data is skewed.
What the other figures mean
- Count — how many valid numbers were found.
- Sum — every value added together.
- Min & Max — the smallest and largest values in your list.
- Range — the gap between the max and the min, a quick gauge of how spread out the data is.
Is it private?
Yes. The Average Calculator is plain JavaScript that runs entirely inside your browser tab. The numbers you paste are never uploaded, logged or stored anywhere — there are no accounts and no tracking of your inputs. Once the page has loaded you can even disconnect from the internet and it will keep working.
Frequently asked questions
What does “No mode” mean?
It means every number in your list appears exactly once, so no single value is more common than the others. If two or more values tie for the most appearances, the calculator lists all of them.
How is the median found for an even count of numbers?
The numbers are sorted and the two middle values are averaged. For example, the median of 2, 4, 6, 8 is (4 + 6) ÷ 2 = 5.
Why was one of my entries ignored?
Only valid numbers are counted. Words, stray letters or symbols are skipped, and the small note under the box tells you how many tokens were ignored so you can spot typos.
Results are rounded for display; for grading or statistics work, double-check critical figures.