Mean / Median / Mode Calculator
Paste a list of numbers and instantly compute mean (average), median, and mode. Useful for grades, surveys, quick analysis, and sanity checks.
Optional: uses the 1.5×IQR rule to exclude outliers. This is informational; keep disabled if unsure.
Enter values separated by commas, spaces, semicolons, or new lines. Supports decimals and negatives. Non-numeric tokens are ignored and reported.
Privacy: runs locally in your browser. No inputs are stored or transmitted.
How it works
Mean: sum ÷ count
Median: middle value after sorting (average of two middle values if count is even)
Mode: value(s) with the highest frequency
Examples
- 10, 12, 12, 15, 18 → mean 13.4, median 12, mode 12
- 1 2 3 4 → mean 2.5, median 2.5, no mode
- -1, -1, 0, 2 → mean 0, median -0.5, mode -1
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- What does this calculator compute?
It computes mean (average), median (middle value), and mode (most frequent value) from a list of numbers. It also shows count, sum, min, max, and range.
- How do I enter the numbers?
Paste numbers separated by commas, spaces, or new lines. You can also use semicolons. Example: 1, 2, 3 4 5.
- Can I include decimals or negative numbers?
Yes. Decimals and negative numbers are supported.
- What if there are multiple modes?
If multiple values tie for the highest frequency, the calculator shows all of them (multi-modal). If every value occurs once, it reports “no mode”.
- Are my inputs stored?
No. Everything runs locally in your browser and inputs are not stored or transmitted.