Percentages and basic math

Average calculator

Enter a list of numbers to calculate the arithmetic mean, sum and number of values.

Calculate the average

Separate numbers with spaces, line breaks, semicolons or commas. Decimal numbers can use a comma or a dot. The input 4,5,6 is interpreted as 4, 5 and 6.

Arithmetic mean

The average, or arithmetic mean, is the sum of the values divided by the number of values. The calculator shows the mean, the sum and how many numbers were included.

Input formats

You can separate numbers with spaces, line breaks, semicolons or commas. Decimal numbers can use either a decimal point or a decimal comma when the list is clear.

Example

The values 10, 20 and 30 have a sum of 60. Dividing 60 by three values gives an average of 20. The calculator shows the same parts so the result is easy to review.

What is not included

This tool calculates the arithmetic mean only. It does not calculate median, mode, weighted averages or statistical confidence intervals.

When an average can mislead

A mean is sensitive to very large or very small values. If a list has strong outliers, the median may describe the middle of the data better, but this calculator only calculates the arithmetic mean.

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