如何计算 Excel 中的天数

Question

I have a date format like 2020-01-17.I would like to calculate number of days till today date. I'm trying it's like

    =today() - B2

However it's not working.

Edit

I changed the format to 01/17/2020 and did

 =today() - B2 

The result comes as 3/23/1900.

This is wrong and I would like to see in number of days.

Answer 1

very simple Check Out Image enter image description here

Answer 2

I think there are 2 issues that you're seeing here.

The result comes as 3/23/1900.

1. The reason you're seeing this result as 3/23/1900 is probably because of the format of the cell. Change cell format to number and you should see your result as a number.
   1. Or you can also use the formula with a VALUE formula like so =VALUE(today() - B2)

I would like to calculate number of days till today date

2. You can always use a simple subtraction of the two dates. You can also use the DATEDIF function and extract the difference between dates in Years, Months, Days and more. Example: =DATEDIF(today(), B2,"D")

Here is the documentation for this DATEDIF function.

Note : Below is the warning from Microsoft

Warning : Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3. The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details

Answer 3

You can you use the datedif fx link: https://exceljet.net/excel-functions/excel-datedif-function

=DATEDIF(B2,TODAY(),"D")