Find the arithmetic mean of a comma-separated list of numbers.
Averages, standard deviation, z-scores, normal distributions and probability calculations.
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
The average of 12, 18, 24 and 30 is 21.
Find the arithmetic mean of a comma-separated list of numbers. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Three values 10, 20, and 70 sum to 100. Dividing by three gives an average of approximately 33.33. Notice how the unusually high value 70 pulls the mean above most of the observations.
Before interpreting: an arithmetic mean gives every observation equal weight. If you need the middle value, calculate the median instead; if some numbers have different importance, use a weighted calculation.
Find the arithmetic mean of a comma-separated list of numbers.
Average = sum of values ÷ number of values.
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