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Mean absolute deviation calculator

Measure the average distance from the mean.

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Mean absolute deviation calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Answer

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Mean absolute deviation = the average absolute distance of values from their arithmetic mean.

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Precision and calculation record
Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.
Saved scenario
Save the current answer, then change an input to compare. This clears when you leave.
Formula and assumptions
This uses the mean as center. It is different from median absolute deviation and from standard deviation.
In a list, use spaces, new lines, semicolons, or commas followed by a space. A comma between groups of three digits is a thousands separator.
Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.
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Updated 
Using Mean absolute deviation calculator
Mean absolute deviation = the average absolute distance of values from their arithmetic mean.
This uses the mean as center. It is different from median absolute deviation and from standard deviation.
Next: Geometric mean calculator
A worked example
With numbers = 2 4 6, the mean absolute deviation is 1.3333333333333333.
Next: Percentile calculator
Before you use the result
This uses the mean as center. It is different from median absolute deviation and from standard deviation.
Cite this page
ToolOctopus. “Mean absolute deviation calculator.” Updated 2026-09-26. https://tooloctopus.com/mean-absolute-deviation-calculator.
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