SQRT function

This article describes the formula syntax and usage of the SQRTfunction in Microsoft Excel.

Description

Returns a positive square root.

Syntax

SQRT(number)

The SQRT function syntax has the following arguments:

  • Number    Required. The number for which you want the square root.

Remark

If number is negative, SQRT returns the #NUM! error value.

Example

The example may be easier to understand if you copy it to a blank worksheet.

How do I copy an example?

  1. Select the example in this article.

    Important   Do not select the row or column headers.

    selecting an example from help

    Selecting an example from Help

  2. Press CTRL+C.

  3. In Excel, create a blank workbook or worksheet.

  4. In the worksheet, select cell A1, and press CTRL+V.

    Important   For the example to work properly, you must paste it into cell A1 of the worksheet.

  5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

After you copy the example to a blank worksheet, you can adapt it to suit your needs.

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A

B

Data

-16

Formula

Description (Result)

=SQRT(16)

Square root of 16 (4)

=SQRT(A2)

Square root of the number above. Because the number is negative, an error is returned (#NUM!)

=SQRT(ABS(A2))

Square root of the absolute value of the number above (4)

Applies To: Excel 2010, Excel Starter, Excel Online, SharePoint Online



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