Skip to content

Arithmetic Mean Calculator

Result

Calculated result Ready Change any value to calculate instantly.
↗ Statistics

Mean Calculator The Mean Calculator finds the arithmetic mean (average) of a list of numbers, along with the sum and count. Enter your values separated by commas. — free online calculator.

Formula

Mean = Σx ÷ n
  • Arithmetic mean calculator. Use the calculator to evaluate the stated statistic and compare it with the worked example.
  • The main inputs are Number 1, Number 2, Number 3, Number 4, Number 5. Enter them in the units and format shown in the calculator.
  • Keep comparable quantities in compatible units whenever the formula combines or compares them.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Arithmetic Mean

Inputs
  • Number 1: 10
  • Number 2: 20
  • Number 3: 30
  • Number 4: 40
  • Number 5: 50

For 5, 10, and 15: (5 + 10 + 15) ÷ 3 = 10.

Sample result: Calculating…

Frequently asked questions

What does the Arithmetic Mean calculate?

Add all observations and divide by the number of observations.

Which values should I enter?

Enter Number 1, Number 2, Number 3, Number 4, Number 5 using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: Mean = Σx ÷ n.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026