Mean Calculator

What it does

Calculate the average of a set of numbers.

Calculate the arithmetic mean in your browser. See the sum, count, steps, median, range, σ and geometric mean. Nothing is uploaded.

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. 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…from meancalc.com

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