Determine number of months that falls within a given range within two other dates

Hi,

I was wondering if there is a way to count the number of months that falls within a given range of dates given dates outside those two given dates. I apologize for not explaining clearly, but here is an example:

The start and end dates can change.
Start Date 5/18/2013
End Date 10/31/2015

I need to determine how many months ranging from 11/1/12 - 10/31/13 FY12, etc fall within the start and end dates.
FY12 : 11/1/2012 - 10/31/2013. The formula should return 5.
FY13 : 11/1/2013 - 10/31/2014. The formula should return 12.
FY14 : 11/1/2014 - 10/31/2015. The formula should return 12.
FY15 : 11/1/2015 - 10/31/2016. The formula should return 0.

I was able to create a formula that returns those values, however, if I decide to change the start date and end dates, it doesn't work. i can't come up with a formula that deals with all scenarios. Any suggestions would help! Thanks in advance!

Thank you!!!

I tweaked it a little, =IFERROR(ROUND((DATEDIF(MAX($C$14,C25),MIN($C$15,C26)+1,"d"))/365*12,0),0)
I really appreciate the help. Thanks again!

@ jchau34

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.