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Mathematics

Find the Average - Calculator

Calculate the arithmetic mean of a list of numbers.

Let’s calculate.

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Arithmetic mean
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Rounded to up to 2 decimal places.

Measurement units

This labels your inputs and result. All values must use the same unit.

SI prefixes and selected international / customary units. Coverage: SI and selected current customary units. Historical units are excluded.

No account needed. Your inputs stay in this browser.

THE IDEA, SIMPLY

How it works

Add all your numbers together, then divide the total by how many numbers you entered.

FORMULA

Mean = (x₁ + x₂ + … + xₙ) / n

A worked example

The mean of 10, 20, 30 and 40 is 100 / 4 = 25.

Formula & detailed explanation

This is the unweighted arithmetic mean of a nonempty, finite list. Every value has equal weight. Decimal points or decimal commas are accepted inside each semicolon-separated value; thousands separators are not supported.

Calculations use decimal arithmetic with 40 significant digits internally. Choose 0–8 decimal places for the displayed result. Trailing zeros are omitted. Rounding affects only the displayed and copied result; very small values may round to zero. Accepted inputs have up to 100 characters and magnitudes from 10⁻¹⁰⁰ to 10¹⁰⁰, plus zero.

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