Excel 使用月份和年份计算两个日期之间每月的天数

Question

I would like to know how to calculate days of each month between two dates:

	A	B	C	D	E	F	G
1	From	To	01/12/20	01/01/21	01/02/21	01/03/21	01/04/21
:--	:---------:	:-----:	:---------:	:--------:	:--------:	:--------:	:-------:
2	15/12/20	12/3/21	17	31	28	12	0

I have tried using a formula I found elsewhere on this website but it only picks up the relevant months from the column headers in row 1. I need it to pick up the years as well. I wonder if anyone is able to alter this formula to include years as well:

=SUMPRODUCT(--(MONTH(ROW(INDIRECT($A2 & ":" & IF($B2="",TODAY(),$B2))))=MONTH(C1)))

Note: Row 1 Dates are dates and not text.

Charles

Answer 1

Try:

C2: =MAX(MIN(EOMONTH(C$1,0),$B2)-MAX(C$1,$A2)+1,0)

and fill across (and down) as needed.