About this tool

Mean, Median & Mode Calculator

Mean, median, mode, range and standard deviation from a list of numbers.

The Mean, Median & Mode Calculator takes a list of numbers and returns the mean, median, mode, range, population standard deviation and count in one pass. You can paste values separated by commas, spaces or line breaks — negatives and decimals included — and it pulls out every number it finds without you having to clean the list first. Mean and standard deviation are shown to two decimal places, and the mode reads "none" when no value repeats.

How to use Mean, Median & Mode Calculator

1. 1

   Open Mean, Median & Mode Calculator on AltFTool — it loads instantly in your browser.

2. 2

   Enter the values you already know.

3. 3

   Fine-tune the options to match your scenario.

4. 4

   Read the result and use it in your planning or reporting.

Why use Mean, Median & Mode Calculator

• Parses messy input

  It scans your text for numbers with a pattern that accepts minus signs and decimal points, so stray labels, commas or blank lines do not break it.

• Six statistics at once

  Mean, median, mode, range, standard deviation and count all come back from one paste, instead of one measure per calculation.

• Says when there is no mode

  If every value appears exactly once, the mode is reported as "none" rather than misleadingly returning the first number.

Common use cases

• You copied a column of survey scores out of a spreadsheet and want the average and spread without building formulas — paste the whole column in, line breaks and all.
• A student checking homework needs to confirm that their median is right for an even-length list, where the answer is the average of the two middle values rather than a value from the list.
• You are comparing two sets of measurements and want the range and standard deviation side by side to argue that one set is noticeably more consistent than the other.

Frequently asked questions