Average Calculator

The average calculator computes the arithmetic mean of a list of numbers by adding them all together and dividing by how many there are. Alongside the mean it reports the running sum, the count of values, and the smallest and largest entries so you can see the spread at a glance. It works for test scores, prices, measurements, or any set of figures you want summarised by a single central value.

Formula

mean = (x₁ + x₂ + … + xₙ) / n

x₁ … xₙ

The individual numbers in your data set

n

The count of numbers entered

mean

The arithmetic average: total sum divided by n

How it works

1. Enter your numbers as a list — the calculator reads each value you provide and ignores blank entries.
2. It sums every value and divides by the count to produce the arithmetic mean, while also tracking the minimum and maximum.
3. The result card shows the average plus the supporting statistics: sum, count, minimum, and maximum.

Worked example

Frequently asked questions

Is the average the same as the mean?

In everyday use, yes. The word "average" most often refers to the arithmetic mean, which is exactly what this calculator computes by summing the values and dividing by their count.

How is the average different from the median?

The average sums all values and divides by the count, so every entry pulls on the result. The median is just the middle value when sorted, which is why a few extreme numbers can skew the average but barely move the median.

Can I average negative numbers or decimals?

Yes. The calculator accepts any real numbers, including negatives and decimals, and the sum and division work exactly the same way regardless of sign.

Why does the result also show minimum and maximum?

The minimum and maximum frame the range of your data, helping you judge whether the average is representative or whether outliers are stretching it in one direction.

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