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Coefficient of Variation Calculator

Compare relative spread on a ratio scale with a positive mean. This measure is not appropriate for arbitrary-zero scales such as Celsius.

Enter your values

Use a decimal point, without thousands separators.

Example result
Coefficient of variation
20 %

The initial result uses the example values. Enter your own values and calculate again.

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How it works

Compare relative spread on a ratio scale with a positive mean. This measure is not appropriate for arbitrary-zero scales such as Celsius.

CV = 100σ/μ

Worked example

Show example inputs and result

Standard deviation: 10 · Positive mean: 50.

Coefficient of variation
20 %

Questions and answers

Why are some results rounded?

Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.

Are my inputs sent to a server?

The calculator processes inputs in your browser. Its code does not send your values to a server.

Method reviewed: October 8, 2026 · Methods & accuracy

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