SQRT function

Returns a positive square root.



Number     is the number for which you want the square root.


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


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

ShowHow to copy an example

  1. Create a blank workbook or worksheet.
  2. Select the example in the Help topic.

 Note   Do not select the row or column headers.

Selecting an example from Help

Selecting an example from Help
  1. Press CTRL+C.
  2. In the worksheet, select cell A1, and press CTRL+V.
  3. 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.
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 2007