When to use it
Use it when you need a clear result without building a manual formula or spreadsheet.
Instant calculator
Average Calculator
Calculate an arithmetic mean from a known total and count, with a worked example and a quick verification check.
FreeInstant calculator
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Input data
Enter the required values, then run the tool.OUTPUT
Result
Ready◇Your result will appear here
Complete the form and run the tool to see the result.
Usage guide
Use the tool with confidence
Enter the required data, review the result, then copy or export it as an image or PDF depending on the tool.How it works
Enter values, run the tool, then review the result and supporting details.
Note
Review the figures and context before making financial or business decisions.
What this calculator does
This calculator finds the arithmetic mean when you already know the total of a group of values and how many values are in that group. It is useful for totals such as scores, sales, or measurements when entering every individual value is unnecessary.
Inputs and field meanings
Review these values before running the tool. The labels below come from the actual form so the guidance matches what you will use on this page.
- Total of values: required.
- Number of values: required, minimum 1.
Formula used
Arithmetic mean = total of values ÷ number of values.
The count must describe the same set of values included in the total. If a value is added or removed, update both the total and the count before calculating.
Worked example
If 8 values add up to 640, the mean is 640 ÷ 8 = 80. A quick check is 80 × 8 = 640, which returns the original total.
How to check the result
- Make sure the count is greater than zero.
- Confirm that the total and count refer to the same data set.
- Multiply the calculated mean by the count and compare it with the original total.
Frequently asked questions
Does this calculate the median?
No. Median requires the individual values to be ordered so the middle value can be identified.
Can I average percentages this way?
Only when the percentages have equal weight. Use a weighted mean when their weights differ.
Can the count be zero?
No. Division by zero is undefined, so the count must be greater than zero.