Math calculator
Average Calculator
Find the arithmetic mean of a list of numbers and review its sum and item count.
Arithmetic mean
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How it works
The arithmetic mean adds every value and divides by the number of values. Empty tokens are ignored, while non-numeric entries keep the result blank.
Average = sum of values ÷ number of values
Worked example
For 10, 20, and 30, the sum is 60 and the average is 20.
How to use this tool
- Enter the known values and choose units where available.
- Check the primary result and supporting details.
- Clear or replace an input to calculate another case.
Frequently asked questions
What happens with invalid or incomplete inputs?
The result remains blank until the required inputs form a finite, meaningful calculation. Zero denominators and physically impossible negative quantities are not calculated.
Can I use decimal values?
Yes. The tool accepts decimals and keeps full precision for the calculation while rounding the displayed result for readability.