Mean Calculator
Calculate the arithmetic mean (average) of a data set, plus sum and count.
Enter numbers separated by commas, spaces, or new lines. Invalid values will be ignored.
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Mean (Average)
Additional Statistics
Count
Sum
Minimum
Maximum
Range
About the Arithmetic Mean
The arithmetic mean, commonly called the average, is a measure of central tendency. It is found by adding together all the values in a data set and dividing the total by how many values there are. The mean gives a single representative value that summarizes the entire data set.
Mean vs Median
Use the mean when your data is roughly symmetric and free of extreme outliers, because it accounts for every value. Use the median when your data is skewed or contains outliers, since the median is the middle value and is not pulled toward unusually large or small numbers. For example, average income is often reported as a median because a few very high earners would inflate the mean.
The Formula
- Formula: Mean = (Sum of all values) / (Count of values)
- Dataset: 2, 4, 6, 8, 10
- Sum: 30 Count: 5
- Mean: 30 / 5 = 6
Related Calculators
Note: This calculator automatically filters out non-numeric values. Ensure your data is entered correctly for accurate results. The mean is sensitive to outliers and should be considered alongside other measures such as the median for complete data analysis.