Math
Variance Calculator
Variance Calculator is free to use. Enter your figures below and the result updates as you type. Use it for planning; it is an estimate, not advice.
About the Variance Calculator
Sample variance = Σ(x − mean)² ÷ (n − 1). The standard deviation is its square root.
Variance is in squared units, so the standard deviation is easier to read in the original units.
How to use the Variance Calculator
- Enter each figure in the boxes above, using the same currency and time units.
- The result updates as you type. Press Calculate to refresh it at any time.
- Change one figure at a time to see how much it moves the result.
Frequently asked questions
What is the Variance Calculator used for?
Variance is in squared units, so the standard deviation is easier to read in the original units.
How accurate is the Variance Calculator?
It applies standard formulas to the figures you enter. Real results depend on actual rates, fees, taxes and timing, so treat the output as an estimate and confirm with your bank or adviser.
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