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Average Calculator
·
calculated client-side · nothing uploaded
// about this tool

Average Calculator Online

Updated 2026-08-19

Calculate the average of a list of numbers online for free. Paste your values and get the mean, median, and mode instantly, along with the sum, count, minimum, maximum, and range. Everything runs in your browser, so nothing you enter is uploaded.

"Average" can mean three different things — the mean, the median, or the mode — and they often disagree, especially when a few outliers pull the mean away from the middle. This calculator shows all three at once plus the supporting stats, so you get the full picture of a data set from one paste, whether it is grades, measurements, or survey results.

// how to use

  1. 1 Paste or type your numbers, separated by commas, spaces, or new lines.
  2. 2 Read the mean, median, and mode along with the sum, count, min, max, and range.
  3. 3 Click Copy results to grab the full breakdown.

// examples

Simple list
Input
10, 20, 30, 40, 50
Output
mean 30, median 30, sum 150, count 5
With a repeated value
Input
10, 20, 20, 30
Output
mean 20, median 20, mode 20

// common uses

Averaging grades, scores, or measurements Summarising a list of numbers quickly Finding the median and mode of a data set Getting the sum, min, max, and range at a glance

// faq

Is anything uploaded to a server?
No. Every statistic is calculated in your browser as you type, so the numbers you enter never leave your machine.
What is the difference between mean, median, and mode?
The mean is the sum divided by the count, the median is the middle value when the numbers are sorted, and the mode is the value that appears most often. Each describes the centre of your data differently.
How does it handle an even count for the median?
With an even number of values there is no single middle, so the median is the average of the two central values after sorting — the standard method.
What if no number repeats?
Then there is no mode, and the tool reports "none". If several values tie for most frequent, it lists all of them.
Which separators can I use?
Commas, spaces, tabs, and new lines all work, and you can mix them. Any numbers — including decimals and negatives — are picked out of the text automatically.

// works with your data

Percentage Calculator Aspect Ratio Calculator Number to Words Sort & Dedupe Lines Word Frequency Counter