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Math / Average

Average Calculator

Calculate the arithmetic average of a list of measurements and show the count and total used. The mean is a useful central summary when values are on the same scale and each observation should receive equal weight. Arithmetic mean = (x₁+x₂+…+xₙ)/n. Every entered value contributes once, regardless of its size. Because extreme observations pull the mean toward themselves, compare it with the median when the list is skewed or contains outliers.

Your inputs

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Your result
7
Arithmetic mean
Result breakdown4: 17: 110: 1
observations4 · 17 · 110 · 1
Count
3
Total
21

Example inputs shown. Adjust them to explore.

A familiar situation

Find the mean of several prices, times, or measurements when each observation counts equally.

How to use this calculator

  1. Enter values.
  2. Select Calculate to see the answer and its breakdown.
  3. Keep a scenario, change an input and compare the results.

Use consistent units and check the assumptions below before applying the result.

How average is calculated

Arithmetic mean = (x₁+x₂+…+xₙ)/n. Every entered value contributes once, regardless of its size. Because extreme observations pull the mean toward themselves, compare it with the median when the list is skewed or contains outliers. For 4, 7, and 10, the total is 21 and the average is 21/3=7.

Arithmetic mean = (x₁+…+xₙ)/n.
A worked example

For 4, 7, and 10, the total is 21 and the average is 21/3=7.

Assumptions & useful context

The result depends on the values you enter and the method described above. Displayed numbers may be rounded; calculations use the unrounded values. Check that this model matches your situation before relying on it.

Frequently asked questions

Is average always the best summary?

No; strong outliers can pull the mean away from a typical observation.

How many values are accepted?

Enter between 1 and 500 finite values separated by commas or spaces.

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