DocomintAverage (Mean) Calculator
Calculate the mean, sum, count, and range of a list of numbers, instantly in your browser.
The plain arithmetic mean of a data set — add everything up, divide by how many numbers there are — for a quick sanity check on a set of test scores, monthly expenses, or survey ratings, without opening a spreadsheet just to run =AVERAGE().
Example: Six quiz scores — 72, 85, 90, 68, 77, 95 — average out to 81.17, with a 68–95 range showing roughly a 27-point spread between the lowest and highest score.
How it works
- Paste a list of numbers, separated by commas or one per line
- Press Calculate
- The mean, sum, count, and range appear instantly, computed on your device
Frequently asked questions
What's the difference between mean, median, and mode?
Mean is the sum divided by the count (what this tool calculates). Median is the middle value once sorted. Mode is the most frequently occurring value. They can differ significantly on skewed data — see Median Calculator for when median is the better choice.
Is there a limit to how many numbers I can enter?
No hard limit — it's parsed and averaged entirely in your browser, so practical limits are just how much you can comfortably paste into the box, not a server-imposed cap.
Is my numbers uploaded anywhere?
No — Average (Mean) Calculator runs entirely in your browser using JavaScript/WebAssembly. Your numbers is never sent to a server.