Math & Everyday Calculators

Square Root Calculator

Use Square Root Calculator free in your browser. No account required; your input is processed locally in your browser.

Runs locallyYour inputs stay in your browser.
Workspace
Result
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HOW IT IS CALCULATED

Calculate the principal square root

Find the non-negative value whose square equals the input number.

Instant resultClear formulaRuns locally
01Values
02√x
03Result

√144 = 12

GOOD TO KNOW

The principal square root is non-negative

Although both 12 and −12 square to 144, √144 conventionally means 12.

02

In short

What logic does the calculator use?

√x

Example?

√144 = 12