Average Calculator
Calculate the arithmetic mean of comma-separated numbers. Review the formula and assumptions before using the result.
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Formula
Arithmetic mean = sum of all entered numbers ÷ count of numbers. Enter comma-separated values; every item must be a valid number.
Worked example
The mean of 10, 20, and 30 is (10 + 20 + 30) ÷ 3 = 20.
What the result means
The arithmetic mean gives each value equal weight and can be affected by unusually high or low values.
How to Use Average Calculator
Enter the requested values
Provide the inputs for this average calculator. Use consistent units where applicable.
Read the arithmetic mean
The result recalculates as you edit the inputs.
Check the average calculator assumptions
Use the average calculator formula and notes below to understand what is—and is not—included.
Key Features & Benefits
Formula and worked example
The mean of 10, 20, and 30 is (10 + 20 + 30) ÷ 3 = 20.
Clear scope
The arithmetic mean gives each value equal weight and can be affected by unusually high or low values.
Frequently Asked Questions
Can I enter negative or decimal numbers?
Yes. Enter valid numbers separated by commas.
Does it ignore invalid entries?
No. If any comma-separated item is not a number, it asks you to enter valid values.
Key terms
- average calculator
- The arithmetic mean gives each value equal weight and can be affected by unusually high or low values.