Average Calculator — Free Online Tool
Get mean, median, mode, range & more from any list of numbers. · No signup · Works on mobile
100% private: your data is processed in your browser. Nothing is uploaded to our servers.
How to use the average calculator
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Paste or type your numbers — any separator works (commas, spaces, line breaks).
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The list is parsed automatically; invalid entries are ignored and flagged.
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Read mean, median, mode, range, sum, and count instantly.
What does this tool do?
This free average calculator finds the mean, median, mode, range, sum, count, minimum, and maximum of any list of numbers in one paste. Enter values separated by commas, spaces, or new lines — great for grades, expenses, survey data, or sports statistics.
How does the average calculator work?
The tool parses your input into numbers, then computes: mean = sum ÷ count; median = middle value of the sorted list (or average of the two middle values); mode = most frequent value(s); range = max − min. Everything recalculates live as you edit.
Frequently Asked Questions
When should I use median instead of mean?
Use the median when data has outliers. For salaries of 30k, 35k, 38k, 40k and 400k, the mean is 108.6k (misleading) while the median is 38k (typical). This is exactly why house prices and incomes are usually reported as medians.
Can a data set have more than one mode?
Yes. If two values tie for the highest frequency the set is bimodal (this tool lists both); three or more makes it multimodal. If every value appears exactly once, there is no mode at all — the tool reports that too.
Is the average calculator really free?
Yes — 100% free with no hidden charges, trial limits, or premium tiers for core features. You don't need to create an account or enter an email address. The site is supported by non-intrusive display ads, which keeps every tool free for everyone.
Is my data private when using the average calculator?
Completely. The average calculator runs entirely in your browser using JavaScript — nothing you type or upload is sent to our servers. When you close the tab, your data is gone. This makes it safe for confidential documents, financial figures, and personal information.
Does the average calculator work on mobile phones?
Yes. The average calculator is built mobile-first and works on any phone or tablet with a modern browser — iPhone (Safari), Android (Chrome), and everything in between. The layout adapts to small screens, so buttons and inputs stay easy to tap on a 375px-wide display.
Do I need to install anything to use the average calculator?
No. The average calculator works directly in your web browser — no downloads, no extensions, no signup. Just open the page, use the tool, and get your result instantly. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.