Comments on: ISNA, ISERROR, and ISBLANK Formula in Excel

By: Bing

Bing — Mon, 26 Apr 2010 23:41:28 +0000

John: are you also including the date in reference? if you do, the formula is making it 31 days instead, not 30

By: Eng Fook Kang

Eng Fook Kang — Sun, 20 Sep 2009 03:58:23 +0000

It great info for end user.

Thanks

By: Check if a Cell Contains Text | Excel Hints

Check if a Cell Contains Text | Excel Hints — Wed, 08 Jul 2009 20:03:40 +0000

[...] are numerous other similar functions built into Excel (such as isNumeric, ISBlank, ISNA and ISERROR) that work similarly to IsText. We will explore those at a later [...]

By: Top Posts in 2008 | Excel Hints

Top Posts in 2008 | Excel Hints — Thu, 01 Jan 2009 20:52:56 +0000

[...] ISNA, ISERROR, and ISBLANK Formula in Excel [...]

By: john

john — Thu, 23 Oct 2008 12:53:52 +0000

Hi Daniel,

You could try something like this if I understood you correctly:

=IF(ISNUMBER(A1),B1+30,B1) put in cell C1

where A1 contains a number or blank and B1 contains a date.
The result of C1 would be the date plus 30 days if there is a number in A1, and just the date from B1 if there is no number in A1.

By: Daniel Bruns

Daniel Bruns — Thu, 23 Oct 2008 10:53:23 +0000

I need to add 30 days to a date from another cell, but only if I have a number in a 3rd cell

By: Mike

Mike — Tue, 15 Jan 2008 14:07:24 +0000

Excel has a different handling of ISBLANK() and COUNTBLANK()
More specifically, if a cell appears to be blank due to a formula like
(contents of cell A1)
IF(FALSE;”";”the evaluation is TRUE”)
the cell will be blank (“” is an empty string)
ISBLANK(A1) will give FALSE, however
COUNTBLANK(A1) will return 1.