DATEDIF(Start_date,End_date,Unit)
Returns the number of days, months, or years between two specified dates.
Parameter 1
Start_date
Represents the initial date of the specified period. Only text and date types are supported.
The Start_date parameter can be serial numbers in the 1900 date system. For example, the serial number 35796 represents January 1,1998.
Parameter 2
End_date
Represents the end date of the specified period. Only text and date types are supported.
The End_date parameter can be serial numbers in the 1900 date system. For example, the serial number 35796 represents January 1,1998.
Parameter 3
Unit
Represents the type of information returned by the function.
If Unit is set to Y or y, the function returns the year difference.
If Unit is set to M or m, the function returns the month difference.
If Unit is set to D or d, the function returns the day difference.
If Unit is set to MD or md, the function returns the day difference (ignoring the year and month).
If Unit is set to YM or ym, the function returns the month difference (ignoring the year and day).
If Unit is set to YD or yd, the function returns the day difference (ignoring the year).
The function supports three parameters, with the first two being of the date or text type and the third being of the text type.
The third parameter supports Y, M, D, MD, YM, and YD, and is case-insensitive.
The function returns the difference between End_date and Start_date. If the difference is negative, it returns the negative value.
The NOW function will be used if parameter 1 or parameter 2 is empty in the actual calculation.
The field types of parameter 1 and parameter 2 should be the same. They can only be both text fields, or date fields for calculation.
1. For example, you want to calculate the month difference between Contract Signing Time and Registration Time. Click Formula Column and enter DATEDIF(Registration Time,Contract Signing Time, "M"), as shown in the following figure.
Note: The fields in the formula need to be selected from fields on the left. Otherwise, the formula will be invalid.
2. The result is the month difference between Contract Signing Time and Registration Time. Positive numbers are displayed as positive, and negative numbers are displayed as negative, as shown in the following figure.
The following table shows more examples.
Result
DATEDIF("2001/2/28","2004/3/20","Y")
3
The year difference between 2001 and 2004
DATEDIF("2001/2/28","2004/3/20","M")
37
The month difference between 2004-03 and 2001-02
DATEDIF("2001/2/28","2004/3/20","D")
1116
The day difference between 2001-02-28 and 2004-03-20
DATEDIF("2001/2/28","2004/3/20","md")
-8
The day difference between the 20th and the 28th, ignoring the month and year.
DATEDIF("2001/1/28","2004/3/20","YM")
2
The month difference between 2001-01-28 and 2004-03-20, ignoring the day and year
DATEDIF("2001/2/28","2004/3/20","yd")
21
The month difference between 2001-02-28 and 2004-03-20, ignoring the year
DATEDIF(35796,35800,"MD")
4
The day difference between 1998-01-01, and 1998-01-05, ignoring the year and month
Returns the difference between End_date and Start_date and returns the negative value if the difference is negative.
Remarks
DATEDIF("2001-02-28","2004-03-20","Y")
DATEDIF("2001-02-28","2004-03-20","M")
DATEDIF("2001-02-28","2004-03-20","D")
DATEDIF("2001-02-28","2004-03-20","md")
The day difference between the 20th and the 28th, ignoring the month and year
DATEDIF("2001-01-28","2004-03-20","YM")
DATEDIF("2001-02-28","2004-03-20","yd")
The day difference between 2001-02-28 and 2004-03-20, ignoring the year and month
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