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Average Calculator (Mean, Median, Mode)

Mean, median, mode, range and sum for any list of numbers.

Input
No upload needed — instant
Privacy
Nothing is uploaded
Cost
Free · no sign-up · no watermark

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Processed entirely on your device

Everything you type or paste is handled by JavaScript running in this tab. No request is sent, nothing is logged and nothing is stored. Close the page and it is gone.

Overview

About the Average Calculator (Mean, Median, Mode)

Enter a list of numbers to get the mean, median, mode, range, sum and count in one place, with the sorted minimum and maximum shown for a quick spread check.

The 'average' people mean is usually the mean, but the median and mode often tell you more. Paste any list of numbers here and get all three, plus the range, sum and count, in a single step.

The three averages

mean   = sum ÷ count
median = middle value when sorted (average the two middle values if the count is even)
mode   = most frequent value(s), or none if nothing repeats

Each measures 'typical' in a different way, and they diverge whenever the data is skewed.

Why the median matters

A single huge outlier drags the mean but barely moves the median. Salaries, house prices and reaction times are classic examples where the median is the more honest summary — which is why this tool shows both side by side.

Private and instant

The list never leaves your browser; every statistic is computed locally with no upload and no account.

Step by step

How to use the Average Calculator (Mean, Median, Mode)

  1. Type or paste your numbers, separated by commas, spaces or new lines.

  2. Read the mean, median, mode and range instantly.

  3. Check the sum, count, minimum and maximum in the breakdown.

Why use it

Benefits and common use cases

What this tool is good for, and what it deliberately does not try to do.

Every average at once

Mean, median and mode are computed together, so you can pick the measure that suits your data instead of running three tools.

Any separator

Paste a comma-separated row, a column from a spreadsheet, or space-separated values — the list parser handles all of them.

Spread at a glance

Sum, count, range, minimum and maximum give the context around the average so a single outlier does not mislead you.

Questions

Frequently asked questions

Short, honest answers about quality, limits and privacy.

What is the difference between mean, median and mode?

The mean is the sum divided by the count. The median is the middle value once sorted, so it ignores how extreme the outliers are. The mode is the value that appears most often. For skewed data the median usually describes the 'typical' value better than the mean.

How is the median found for an even count?

Sort the numbers and average the two middle ones. For 1, 2, 3, 4 the median is (2 + 3) ÷ 2 = 2.5. With an odd count it is simply the middle number.

What if there is no mode?

If every value appears exactly once there is no mode, and the calculator reports 'None'. If several values tie for most frequent, all of them are listed.