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Mean Calculator (Arithmetic Average)

Paste a list of numbers and get the mean, median, mode, range, sum, min and max at once — or compute a weighted average with full steps.

Separate numbers with commas, spaces or new lines. A decimal comma like 3,14 is understood — separate such numbers with spaces or new lines.

Processing... 0%
Parsing the numbers
Sorting the values
Computing the statistics

Result

This page opens the average calculator focused on the mean: paste your numbers, press the button, and the arithmetic average is highlighted at the top of the results, next to the median, mode, range, sum and count computed from the same list.

The mean is defined by one formula: add every value and divide by how many values there are, x̄ = (x₁ + x₂ + … + xₙ) ÷ n. For the list 2, 4, 4, 4, 5, 5, 7, 9 the sum is 40 and the count is 8, so the mean is 40 ÷ 8 = 5. It is the single number that balances the whole list — the total stays the same if every value is replaced by the mean.

Separators are flexible — commas, spaces or one number per line all parse — and decimal commas like 3,14 are read correctly. Because the mean is sensitive to outliers, the calculator always prints the median beside it, so one glance tells you whether a few extreme values are dragging your average.

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Accepted Formats & Rules

  • Mean, median, mode(s), range, sum, count, minimum and maximum from one list of numbers.
  • Weighted average mode: value and weight pairs, one per line, with a step-by-step product table.
  • Sorted copy of your list plus honest mode detection, including a clear "no mode" verdict.

Key Benefits

✓ One paste gives you every basic statistic at once: mean, median, mode, range, sum, count, min and max.
✓ Numbers can be separated by commas, spaces or new lines, and decimal commas like 3,14 are understood.
✓ Everything is computed locally in your browser — your data never leaves the page.

Use Cases

  • • Paste a column of exam scores or survey answers and get the mean, median and mode in one run to see the typical value and whether outliers skew it.
  • • Compute a weighted course grade from "grade: credits" pairs — the step table shows every grade × credit product before the final average.
  • • Check the spread of monthly expenses or sensor readings at a glance: range, min, max and the sorted list come with every calculation.