โ Math
Variance Calculator
Variance is the average squared distance from the mean. Squaring makes every deviation positive and gives more weight to extreme values, which is precisely what makes variance useful for risk measurement.
How it works
Numbers (comma separated)
Population variance
Sample variance
Mean
Sum of squared deviations
Count
Frequently asked questions
How do I use the Variance Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.