How to use this calculator
Coefficient of variation expresses relative spread as a percentage of the mean magnitude.
The method
Enter your values in the labeled fields and choose Calculate. The result panel shows the answer and supporting values when useful.
Mean: 50, Standard deviation: 8
Select Calculate to evaluate these example values.
Scope and limitations
The mean cannot be zero. Interpret CV carefully when the mean is near zero or when negative means are meaningful.
Common questions
Can I use different units?
Use consistent units unless this page is a unit converter. The result follows the units implied by the inputs.
Are results exact?
Displayed values may be rounded. Keep extra precision for important follow-up calculations.
Methods & verification
Formulas use standard mathematical definitions and fixed unit factors where applicable. See our methodology for numerical conventions, rounding, privacy, and limitations.