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Enter
Type the problem — numbers, a formula, or the loan fields.
Add the numbers, divide by how many there are. That is the mean — shown here with the working and the rest of the usual stats.
Separate with commas, spaces or new lines.
Results appear here.
Type the problem — numbers, a formula, or the loan fields.
Press Calculate. The answer is computed on this page.
Use the explanation, chart or schedule to check the result.
Sum every value, then divide by the count. That is the arithmetic mean, the everyday “average.” It is the right tool for rates, costs per day, and anything where each observation should count the same.
If a few values are wildly larger than the rest, look at the median on mediancalculator.com as well. Both numbers are useful; they answer different questions.
When every number is positive, the calculator also shows the geometric mean (exp of the mean of logs) and the harmonic mean (the reciprocal of the mean of reciprocals). Speed averages and ratio averages often want the harmonic mean; growth factors want the geometric mean.
Sample standard deviation uses n − 1. Quartiles and Tukey outliers use the same sorted list as the median.
No. Every number has weight 1. Repeat a value if it should count twice.
Yes. New lines, commas or spaces all work.
Sample (n − 1) when there are at least two numbers.
No. The average is computed in this tab.