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
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.