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The calculator online: Square root calculation
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Results

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# Calculate the square root of a number

The calculator automatically calculates the square root of the indicated number. The notation is √. For example, the square root notation of 9 is √9.

## What is a square root?

The square root of a number 'x' corresponds to the number 'y' which can be multiplied by itself and which will result from the number 'x'. For example √9 = 3 because 3 * 3 = 3² = 9. Or if √x = y then y² = x.

## Never negative

The radicand ('x' in √x) is always positive.

## Backups

You can save the results by pressing the SAVE button.

## Export in CSV

It is possible to export the backups in CSV format.

## Erase everything

With the RESET button you can erase everything at once.

## Calculate faster and use in external site

You can use a link pointing to this site. It will allow your users to know the square root of a number. Just use the link on this page https://www.the-calculator-online.com/square-root-calculation.php and add "? A = 45" without quotation marks. The number 45 corresponds to the one to be calculated. Attention is quite strict, you must add after the link the "?", The "a", the "=" and the number. Do not add other characters otherwise it will not work.

For example you can calculate the square root of 4 by pointing to this link https://www.the-calculator-online.com/square-root-calculation.php?a=4 using the appropriate tag.