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Coefficient of Variation Calculator

This coefficient of variation calculator helps when standard deviation, mean are already known and you want the coefficient of variation quickly.

Important Use Notice

Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.

Estimate

Enter job values, review the estimate, then use the decision hints before ordering or quoting.

Estimate Results

Enter values to see the result.

Example

5, 40 gives Coefficient of Variation 12. 5.

Formula

CV = (standard deviation / mean) x 100

Compare the spread to the size of the mean by dividing and converting to a percent.

This gives a relative measure of variation.

Check

Mixing units or scales across standard deviation, mean before calculating coefficient of variation.
Confirm that all inputs use the same unit system expected by the formula.

Next Step

Next Calc

Population Variance Calculator

Next: population variance.

Next Calc

Sample Variance Calculator

Next: sample variance.

Next Calc

Arithmetic Mean of Four Values Calculator

Next: arithmetic mean of four values.

FAQ

When should I keep extra decimals for coefficient of variation calculator?

Keep more decimal places when the result will be reused in another formula, drawing, or comparison rather than read once and rounded.

Is coefficient of variation calculator a stable evergreen formula?

Yes. The formula is stable and this tool only covers straightforward calculation.