Counting Date Fields

Column A contains dates formated 07/15.

I would like to construct a formula for column B that would count
the number of days since the date posted in column A.

For example, today is 07/27, therefore the answer would be 12.

Hopefully someone can point me in the right direction --- I don't even
know where to start other than =Count( .

Help is always appreciated.

In B1: =TODAY()-A1
formatted as number
//Ola

The formula In B1: =TODAY()-A1 formatted as number works perfectly.

However, there is another problem. When I tested the formula I realized that there are two fields with dates. A1 and B1 --- either can contain a date but not both at the same time. C1 would then contain In B1: =TODAY()-A1 formatted as number, however, it needs to consider both A1 and B1.

Thanks for everyone's help.

"either can contain a date but not both at the same time"

...can contain...
=CHOOSE(1+ISNUMBER(A1)*1+ISNUMBER(B1)*2,"",TODAY()-A1,TODAY()-B1,"")

... always contain...
=TODAY()-IF(ISNUMBER(A1),A1,B1)


HTH
Ola