Mean, Median and Mode Calculator
Free mean, median and mode calculator — paste any list of numbers and get all three at once, plus a quick read on whether the data are skewed.
Paste any list of numbers, separated by commas, spaces or semicolons. The calculator returns all three central-tendency measures at once.
What each measure tells you
- Mean — the arithmetic average. Sensitive to extreme values: one oddball can pull it far from where most of the data sit.
- Median — the middle value after sorting. Robust to outliers: a single huge number doesn’t move it.
- Mode — the most frequent value. Tells you what’s typical in a rough, categorical sense. There can be zero, one or several modes.
Quick sketch of what they show together
| Pattern | What it tells you |
|---|---|
| Mean ≈ median ≈ mode | Roughly symmetric data |
| Mean > median | Right-skewed (a long tail of large values) |
| Mean < median | Left-skewed (a long tail of small values) |
| No mode | Every value unique — small sample or continuous data |
| Multiple modes | Either real bimodality, or just coincidence with small n |
Decimal separator
Use the dot for decimals (1.5), since commas separate items in the
list. Whitespace and semicolons also work as separators.
Worked examples
-
1, 2, 2, 3, 5
Mean 2.6 · median 2 · mode 2
-
1, 2, 3, 4 (no repeats → no mode)
Mean 2.5 · median 2.5 · no mode
-
1, 1, 2, 2 (two modes)
Mean 1.5 · median 1.5 · modes 1, 2
Frequently asked questions
What's the difference between mean, median and mode?
Mean is the arithmetic average (sum ÷ count). Median is the middle value after sorting (or the average of the two middles for even counts). Mode is the most frequent value — there can be one, several, or none.
When should I use median instead of mean?
Whenever a few extreme values would distort the picture — incomes, house prices, response times. The median ignores how far the outliers are, just where they sit in the ranking; the mean does not.
Can a dataset have no mode?
Yes — if every value occurs exactly once, no value is more frequent than any other, so there's no mode. We report "no mode" in that case.
Can a dataset have more than one mode?
Yes — if two or more values tie for highest frequency, they're all modes. We list them all, sorted ascending.
Are decimals okay?
Yes — use the dot as the decimal point (e.g. 1.5) so that commas can keep separating items. Whitespace and semicolons also work as separators.
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