Calculators

How to Use the Average, Median & Standard Deviation Calculator

2026-11-134 min readBy Apex Tool Station Team

Paste a list of numbers to get mean, median, mode, range, variance, standard deviation, sum and count.

100% free No signup Works in your browser

Open the Average, Median & Standard Deviation Calculator tool

1. What is the Average, Median & Standard Deviation Calculator?

Paste marks, prices, survey answers or any data set to get the key statistics instantly. The mean is the average, the median is the middle value, the mode is the most frequent value, and standard deviation shows how spread out the numbers are. Both sample and population formulas are shown.

2. How to use the Average, Median & Standard Deviation Calculator

Here is the whole process, step by step. It takes less than a minute from opening the tool to seeing your result.

1Fill in the Numbers (separated by commas, spaces or new lines) field.
2Your result updates as you type — read it below the fields, with its breakdown where shown.

Your result updates as you type — there is nothing to press and nothing to wait for.

Everything runs in your browser — your files and text never leave your device.

3. Tips for best results

Your text never leaves your device — The tool runs entirely in your browser using JavaScript. Nothing is uploaded, so you can paste private documents without worry. That also means there is no account to create and no file to upload.
It works on your phone too — Open the tool in any modern browser on Android or iPhone. The layout adjusts to the screen and everything works the same way on a small screen as on a desktop.
Read the breakdown, not just the headline number — The result updates as you type. The breakdown underneath shows how the number was worked out, which is where mistakes usually show up.

Why use the Average, Median & Standard Deviation Calculator

Frequently asked questions

Is the Average, Median & Standard Deviation Calculator free?

Yes. The Average, Median & Standard Deviation Calculator on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.

Are my files or data uploaded to a server?

No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.

Does it work on mobile?

Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.

Apex Tool Station TeamFree Online Tools

The team behind Apex Tool Station. We build free online tools that run in your browser — no signup, no uploads, no watermarks.

Try the Average, Median & Standard Deviation Calculator

The Average, Median & Standard Deviation Calculator is free, with no signup and no watermark. Open it and try it now. Paste any text and watch the result update as you type.

Open the Average, Median & Standard Deviation Calculator tool