Calculating the number of days between two dates in Excel
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I consider 7 days to be a week,
so if I look at 1 January 2019 - 7 January 2019,
I would say that is 7 days.
But often I seen when people are calculating the number of days between two dates or age they use the formula B1-A1 where A1 is the Start Date/DoB
and B1 is the end date or today's date.
This would give 6 for the above example.
I use (B1-A1)+1 which gives 7
and for dates of birth I would use ((B1-A1)+1)/365.25.
Which is correct?
microsoft-excel date-time date
edited Mar 27 at 5:10
Scott
16.2k113990
asked Mar 25 at 12:12
NazNaz
17912
add a comment |
I consider 7 days to be a week,
so if I look at 1 January 2019 - 7 January 2019,
I would say that is 7 days.
But often I seen when people are calculating the number of days between two dates or age they use the formula B1-A1 where A1 is the Start Date/DoB
and B1 is the end date or today's date.
This would give 6 for the above example.
I use (B1-A1)+1 which gives 7
and for dates of birth I would use ((B1-A1)+1)/365.25.
Which is correct?
microsoft-excel date-time date
edited Mar 27 at 5:10
Scott
16.2k113990
asked Mar 25 at 12:12
NazNaz
17912
2
7 - 1 is 6, no? What is correct depends on your definition and whether you include timestamps or not. When subtracting 20190101T00:00:00 from 20190107T23:59:59, you get 6.999, which can be rounded appropriately.
– slhck
Mar 25 at 12:38
@slhck That really makes sense when you think about the time as well as date.
– Naz
Mar 25 at 12:54
7
If start date/dob and today are the same day, do you want the answer to be 0 or 1? B1-A1 is the number of complete days that have past.
– Forward Ed
Mar 25 at 13:28
2
You're asking whether exclusive or inclusive operations are correct. They're both correct, depending on what you are trying to achieve. See @Chris Rogers's answer below.
– studog
Mar 25 at 18:56
(1) Well, there’s also the point of view that there are 5 days between 1 January and 7 January. See this. (2) If a person was born on 27 March 1959, on what day did they turn 20? 27 March 1979. Now, ifB1= 27 March 1979 andA1= 27 March 1959, what does your formula say? What does it say forB1= 26 March 1979?
– Scott
Mar 27 at 5:14
add a comment |
I consider 7 days to be a week,
so if I look at 1 January 2019 - 7 January 2019,
I would say that is 7 days.
But often I seen when people are calculating the number of days between two dates or age they use the formula B1-A1 where A1 is the Start Date/DoB
and B1 is the end date or today's date.
This would give 6 for the above example.
I use (B1-A1)+1 which gives 7
and for dates of birth I would use ((B1-A1)+1)/365.25.
Which is correct?
microsoft-excel date-time date
edited Mar 27 at 5:10
Scott
16.2k113990
asked Mar 25 at 12:12
NazNaz
17912
I consider 7 days to be a week,
so if I look at 1 January 2019 - 7 January 2019,
I would say that is 7 days.
But often I seen when people are calculating the number of days between two dates or age they use the formula B1-A1 where A1 is the Start Date/DoB
and B1 is the end date or today's date.
This would give 6 for the above example.
I use (B1-A1)+1 which gives 7
and for dates of birth I would use ((B1-A1)+1)/365.25.
Which is correct?
microsoft-excel date-time date
microsoft-excel date-time date
edited Mar 27 at 5:10
Scott
16.2k113990
asked Mar 25 at 12:12
NazNaz
17912
edited Mar 27 at 5:10
Scott
16.2k113990
asked Mar 25 at 12:12
NazNaz
17912
edited Mar 27 at 5:10
Scott
16.2k113990
edited Mar 27 at 5:10
Scott
16.2k113990
edited Mar 27 at 5:10
Scott
16.2k113990
16.2k113990
asked Mar 25 at 12:12
NazNaz
17912
asked Mar 25 at 12:12
NazNaz
17912
asked Mar 25 at 12:12
NazNaz
17912
17912
2
7 - 1 is 6, no? What is correct depends on your definition and whether you include timestamps or not. When subtracting 20190101T00:00:00 from 20190107T23:59:59, you get 6.999, which can be rounded appropriately.
– slhck
Mar 25 at 12:38
@slhck That really makes sense when you think about the time as well as date.
– Naz
Mar 25 at 12:54
7
If start date/dob and today are the same day, do you want the answer to be 0 or 1? B1-A1 is the number of complete days that have past.
– Forward Ed
Mar 25 at 13:28
2
You're asking whether exclusive or inclusive operations are correct. They're both correct, depending on what you are trying to achieve. See @Chris Rogers's answer below.
– studog
Mar 25 at 18:56
(1) Well, there’s also the point of view that there are 5 days between 1 January and 7 January. See this. (2) If a person was born on 27 March 1959, on what day did they turn 20? 27 March 1979. Now, ifB1= 27 March 1979 andA1= 27 March 1959, what does your formula say? What does it say forB1= 26 March 1979?
– Scott
Mar 27 at 5:14
add a comment |
2
7 - 1 is 6, no? What is correct depends on your definition and whether you include timestamps or not. When subtracting 20190101T00:00:00 from 20190107T23:59:59, you get 6.999, which can be rounded appropriately.
– slhck
Mar 25 at 12:38
@slhck That really makes sense when you think about the time as well as date.
– Naz
Mar 25 at 12:54
7
If start date/dob and today are the same day, do you want the answer to be 0 or 1? B1-A1 is the number of complete days that have past.
– Forward Ed
Mar 25 at 13:28
2
You're asking whether exclusive or inclusive operations are correct. They're both correct, depending on what you are trying to achieve. See @Chris Rogers's answer below.
– studog
Mar 25 at 18:56
(1) Well, there’s also the point of view that there are 5 days between 1 January and 7 January. See this. (2) If a person was born on 27 March 1959, on what day did they turn 20? 27 March 1979. Now, ifB1= 27 March 1979 andA1= 27 March 1959, what does your formula say? What does it say forB1= 26 March 1979?
– Scott
Mar 27 at 5:14
2
2
7 - 1 is 6, no? What is correct depends on your definition and whether you include timestamps or not. When subtracting 20190101T00:00:00 from 20190107T23:59:59, you get 6.999, which can be rounded appropriately.
– slhck
Mar 25 at 12:38
7 - 1 is 6, no? What is correct depends on your definition and whether you include timestamps or not. When subtracting 20190101T00:00:00 from 20190107T23:59:59, you get 6.999, which can be rounded appropriately.
– slhck
Mar 25 at 12:38
@slhck That really makes sense when you think about the time as well as date.
– Naz
Mar 25 at 12:54
@slhck That really makes sense when you think about the time as well as date.
– Naz
Mar 25 at 12:54
7
7
If start date/dob and today are the same day, do you want the answer to be 0 or 1? B1-A1 is the number of complete days that have past.
– Forward Ed
Mar 25 at 13:28
If start date/dob and today are the same day, do you want the answer to be 0 or 1? B1-A1 is the number of complete days that have past.
– Forward Ed
Mar 25 at 13:28
2
2
You're asking whether exclusive or inclusive operations are correct. They're both correct, depending on what you are trying to achieve. See @Chris Rogers's answer below.
– studog
Mar 25 at 18:56
You're asking whether exclusive or inclusive operations are correct. They're both correct, depending on what you are trying to achieve. See @Chris Rogers's answer below.
– studog
Mar 25 at 18:56
(1) Well, there’s also the point of view that there are 5 days between 1 January and 7 January. See this. (2) If a person was born on 27 March 1959, on what day did they turn 20? 27 March 1979. Now, if
B1 = 27 March 1979 and A1 = 27 March 1959, what does your formula say? What does it say for B1 = 26 March 1979?– Scott
Mar 27 at 5:14
(1) Well, there’s also the point of view that there are 5 days between 1 January and 7 January. See this. (2) If a person was born on 27 March 1959, on what day did they turn 20? 27 March 1979. Now, if
B1 = 27 March 1979 and A1 = 27 March 1959, what does your formula say? What does it say for B1 = 26 March 1979?– Scott
Mar 27 at 5:14
add a comment |
3 Answers
3
active
oldest
votes
It is not a question of one formula being right and the other being wrong. It is a question of what you are looking for.
Say you are working on a task 24 hours a day. You begin the task 17 January 2000 at 9:00 AM and complete the task 18 January 2000 at 9:00 AM. If the question is How many days did the task take ? You would take the difference; get 24 hours and answer 1 day.
If, however, the question is On how many days did you work on the task ? You would immediately respond 2
Thus =B1 - A1 or =B1 - A1 + 1 might be appropriate depending on what you are trying to measure.
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
add a comment |
The answer revolves around how Excel deals with dates. When days between dates are calculated using formulae such as B1-A1, Excel would turn the dates into serial numbers and use the serial numbers to calculate the number or days in between.
By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,447 days after January 1, 1900. (Source: Microsoft)
So the days between January 1, 1900 and January 7, 1900 would equal 7 minus 1 equalling 6.
The same would apply with 1/1/2008 - 7/1/2008
January 1, 2008 is 39,447 and
January 7, 2008 is 39,453
39,453 — 39,447 = 6
If you wish to count the days inclusive you would need to add 1 to make the formula to be for example B1-A1+1.
If you want to calculate days exclusive you would need to minus 1 day making B1-A1-1
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
3
The deeper answer is that mathematical operations like+and-are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.
– studog
Mar 25 at 18:50
add a comment |
I wold like to suggest 3 different Formula to Calculate AGE between 2 Dates.
- To get only Years:
=INT((B1-A1)/365)
Or,
=ROUNDDOWN(YEARFRAC(A1, B1, 1), 0)
Or, you may use TODAY() Function also:
=ROUNDDOWN(YEARFRAC(A1, TODAY(), 1), 0)
To Get Complete Age in Years, Months and Days use this one.
=DATEDIF(A1,B1,"Y") & " Years, " & DATEDIF(A1,B1,"YM") & " Months, " & DATEDIF(A1,B1,"MD") & " Days"
Edited:
Counting number of days between two Dates is little bit arbitrary. Basically depends on need.
- Count number of days, Excluding Start
Date. - Count number of days, Including Start
Date. - Count number of days, Excluding both
Start & End Date.
Considering OP's Sample Dates following Formula can be used.
Formula for situation 1:
=DATEDIF(B2,B3,"d")
=DAYS(B3,B2)
=INT(B3-B2)
Formula for situation 2:
=DATEDIF(B2,B3,"d")+1
=DAYS(B3,B2)+1
=INT(B3-B2+1)
Formula for situation 3:
=DATEDIF(B2,B3,"d")-1
=DAYS(B3,B2)-1
=INT(B3-B2-1)
Adjust Cell references in the Formula as needed.
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
3
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding((B1-A1)+1)/365.25.It's really unfortunate to get DOWN VOTE after All !!
– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!=INT((B1-A1)/365)
– Rajesh S
Mar 25 at 13:05
3
INT((B1-A1)/365)can provide the wrong result if there is are leap years involved.
– Chris Rogers
Mar 25 at 13:21
|
show 2 more comments
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
It is not a question of one formula being right and the other being wrong. It is a question of what you are looking for.
Say you are working on a task 24 hours a day. You begin the task 17 January 2000 at 9:00 AM and complete the task 18 January 2000 at 9:00 AM. If the question is How many days did the task take ? You would take the difference; get 24 hours and answer 1 day.
If, however, the question is On how many days did you work on the task ? You would immediately respond 2
Thus =B1 - A1 or =B1 - A1 + 1 might be appropriate depending on what you are trying to measure.
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
add a comment |
It is not a question of one formula being right and the other being wrong. It is a question of what you are looking for.
Say you are working on a task 24 hours a day. You begin the task 17 January 2000 at 9:00 AM and complete the task 18 January 2000 at 9:00 AM. If the question is How many days did the task take ? You would take the difference; get 24 hours and answer 1 day.
If, however, the question is On how many days did you work on the task ? You would immediately respond 2
Thus =B1 - A1 or =B1 - A1 + 1 might be appropriate depending on what you are trying to measure.
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
add a comment |
It is not a question of one formula being right and the other being wrong. It is a question of what you are looking for.
Say you are working on a task 24 hours a day. You begin the task 17 January 2000 at 9:00 AM and complete the task 18 January 2000 at 9:00 AM. If the question is How many days did the task take ? You would take the difference; get 24 hours and answer 1 day.
If, however, the question is On how many days did you work on the task ? You would immediately respond 2
Thus =B1 - A1 or =B1 - A1 + 1 might be appropriate depending on what you are trying to measure.
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
It is not a question of one formula being right and the other being wrong. It is a question of what you are looking for.
Say you are working on a task 24 hours a day. You begin the task 17 January 2000 at 9:00 AM and complete the task 18 January 2000 at 9:00 AM. If the question is How many days did the task take ? You would take the difference; get 24 hours and answer 1 day.
If, however, the question is On how many days did you work on the task ? You would immediately respond 2
Thus =B1 - A1 or =B1 - A1 + 1 might be appropriate depending on what you are trying to measure.
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
edited Mar 26 at 10:38
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
answered Mar 25 at 13:32
Gary's StudentGary's Student
14.2k31733
14.2k31733
add a comment |
add a comment |
The answer revolves around how Excel deals with dates. When days between dates are calculated using formulae such as B1-A1, Excel would turn the dates into serial numbers and use the serial numbers to calculate the number or days in between.
By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,447 days after January 1, 1900. (Source: Microsoft)
So the days between January 1, 1900 and January 7, 1900 would equal 7 minus 1 equalling 6.
The same would apply with 1/1/2008 - 7/1/2008
January 1, 2008 is 39,447 and
January 7, 2008 is 39,453
39,453 — 39,447 = 6
If you wish to count the days inclusive you would need to add 1 to make the formula to be for example B1-A1+1.
If you want to calculate days exclusive you would need to minus 1 day making B1-A1-1
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
3
The deeper answer is that mathematical operations like+and-are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.
– studog
Mar 25 at 18:50
add a comment |
The answer revolves around how Excel deals with dates. When days between dates are calculated using formulae such as B1-A1, Excel would turn the dates into serial numbers and use the serial numbers to calculate the number or days in between.
By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,447 days after January 1, 1900. (Source: Microsoft)
So the days between January 1, 1900 and January 7, 1900 would equal 7 minus 1 equalling 6.
The same would apply with 1/1/2008 - 7/1/2008
January 1, 2008 is 39,447 and
January 7, 2008 is 39,453
39,453 — 39,447 = 6
If you wish to count the days inclusive you would need to add 1 to make the formula to be for example B1-A1+1.
If you want to calculate days exclusive you would need to minus 1 day making B1-A1-1
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
3
The deeper answer is that mathematical operations like+and-are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.
– studog
Mar 25 at 18:50
add a comment |
The answer revolves around how Excel deals with dates. When days between dates are calculated using formulae such as B1-A1, Excel would turn the dates into serial numbers and use the serial numbers to calculate the number or days in between.
By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,447 days after January 1, 1900. (Source: Microsoft)
So the days between January 1, 1900 and January 7, 1900 would equal 7 minus 1 equalling 6.
The same would apply with 1/1/2008 - 7/1/2008
January 1, 2008 is 39,447 and
January 7, 2008 is 39,453
39,453 — 39,447 = 6
If you wish to count the days inclusive you would need to add 1 to make the formula to be for example B1-A1+1.
If you want to calculate days exclusive you would need to minus 1 day making B1-A1-1
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
The answer revolves around how Excel deals with dates. When days between dates are calculated using formulae such as B1-A1, Excel would turn the dates into serial numbers and use the serial numbers to calculate the number or days in between.
By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,447 days after January 1, 1900. (Source: Microsoft)
So the days between January 1, 1900 and January 7, 1900 would equal 7 minus 1 equalling 6.
The same would apply with 1/1/2008 - 7/1/2008
January 1, 2008 is 39,447 and
January 7, 2008 is 39,453
39,453 — 39,447 = 6
If you wish to count the days inclusive you would need to add 1 to make the formula to be for example B1-A1+1.
If you want to calculate days exclusive you would need to minus 1 day making B1-A1-1
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
edited Mar 25 at 12:53
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
answered Mar 25 at 12:47
Chris RogersChris Rogers
1,019220
1,019220
3
The deeper answer is that mathematical operations like+and-are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.
– studog
Mar 25 at 18:50
add a comment |
3
The deeper answer is that mathematical operations like+and-are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.
– studog
Mar 25 at 18:50
3
3
The deeper answer is that mathematical operations like
+ and - are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.– studog
Mar 25 at 18:50
The deeper answer is that mathematical operations like
+ and - are defined as an exclusive operation. It's not Excel-specific; the Excel part is the translation from date/timestamps to serial numbers.– studog
Mar 25 at 18:50
add a comment |
I wold like to suggest 3 different Formula to Calculate AGE between 2 Dates.
- To get only Years:
=INT((B1-A1)/365)
Or,
=ROUNDDOWN(YEARFRAC(A1, B1, 1), 0)
Or, you may use TODAY() Function also:
=ROUNDDOWN(YEARFRAC(A1, TODAY(), 1), 0)
To Get Complete Age in Years, Months and Days use this one.
=DATEDIF(A1,B1,"Y") & " Years, " & DATEDIF(A1,B1,"YM") & " Months, " & DATEDIF(A1,B1,"MD") & " Days"
Edited:
Counting number of days between two Dates is little bit arbitrary. Basically depends on need.
- Count number of days, Excluding Start
Date. - Count number of days, Including Start
Date. - Count number of days, Excluding both
Start & End Date.
Considering OP's Sample Dates following Formula can be used.
Formula for situation 1:
=DATEDIF(B2,B3,"d")
=DAYS(B3,B2)
=INT(B3-B2)
Formula for situation 2:
=DATEDIF(B2,B3,"d")+1
=DAYS(B3,B2)+1
=INT(B3-B2+1)
Formula for situation 3:
=DATEDIF(B2,B3,"d")-1
=DAYS(B3,B2)-1
=INT(B3-B2-1)
Adjust Cell references in the Formula as needed.
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
3
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding((B1-A1)+1)/365.25.It's really unfortunate to get DOWN VOTE after All !!
– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!=INT((B1-A1)/365)
– Rajesh S
Mar 25 at 13:05
3
INT((B1-A1)/365)can provide the wrong result if there is are leap years involved.
– Chris Rogers
Mar 25 at 13:21
|
show 2 more comments
I wold like to suggest 3 different Formula to Calculate AGE between 2 Dates.
- To get only Years:
=INT((B1-A1)/365)
Or,
=ROUNDDOWN(YEARFRAC(A1, B1, 1), 0)
Or, you may use TODAY() Function also:
=ROUNDDOWN(YEARFRAC(A1, TODAY(), 1), 0)
To Get Complete Age in Years, Months and Days use this one.
=DATEDIF(A1,B1,"Y") & " Years, " & DATEDIF(A1,B1,"YM") & " Months, " & DATEDIF(A1,B1,"MD") & " Days"
Edited:
Counting number of days between two Dates is little bit arbitrary. Basically depends on need.
- Count number of days, Excluding Start
Date. - Count number of days, Including Start
Date. - Count number of days, Excluding both
Start & End Date.
Considering OP's Sample Dates following Formula can be used.
Formula for situation 1:
=DATEDIF(B2,B3,"d")
=DAYS(B3,B2)
=INT(B3-B2)
Formula for situation 2:
=DATEDIF(B2,B3,"d")+1
=DAYS(B3,B2)+1
=INT(B3-B2+1)
Formula for situation 3:
=DATEDIF(B2,B3,"d")-1
=DAYS(B3,B2)-1
=INT(B3-B2-1)
Adjust Cell references in the Formula as needed.
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
3
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding((B1-A1)+1)/365.25.It's really unfortunate to get DOWN VOTE after All !!
– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!=INT((B1-A1)/365)
– Rajesh S
Mar 25 at 13:05
3
INT((B1-A1)/365)can provide the wrong result if there is are leap years involved.
– Chris Rogers
Mar 25 at 13:21
|
show 2 more comments
I wold like to suggest 3 different Formula to Calculate AGE between 2 Dates.
- To get only Years:
=INT((B1-A1)/365)
Or,
=ROUNDDOWN(YEARFRAC(A1, B1, 1), 0)
Or, you may use TODAY() Function also:
=ROUNDDOWN(YEARFRAC(A1, TODAY(), 1), 0)
To Get Complete Age in Years, Months and Days use this one.
=DATEDIF(A1,B1,"Y") & " Years, " & DATEDIF(A1,B1,"YM") & " Months, " & DATEDIF(A1,B1,"MD") & " Days"
Edited:
Counting number of days between two Dates is little bit arbitrary. Basically depends on need.
- Count number of days, Excluding Start
Date. - Count number of days, Including Start
Date. - Count number of days, Excluding both
Start & End Date.
Considering OP's Sample Dates following Formula can be used.
Formula for situation 1:
=DATEDIF(B2,B3,"d")
=DAYS(B3,B2)
=INT(B3-B2)
Formula for situation 2:
=DATEDIF(B2,B3,"d")+1
=DAYS(B3,B2)+1
=INT(B3-B2+1)
Formula for situation 3:
=DATEDIF(B2,B3,"d")-1
=DAYS(B3,B2)-1
=INT(B3-B2-1)
Adjust Cell references in the Formula as needed.
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
I wold like to suggest 3 different Formula to Calculate AGE between 2 Dates.
- To get only Years:
=INT((B1-A1)/365)
Or,
=ROUNDDOWN(YEARFRAC(A1, B1, 1), 0)
Or, you may use TODAY() Function also:
=ROUNDDOWN(YEARFRAC(A1, TODAY(), 1), 0)
To Get Complete Age in Years, Months and Days use this one.
=DATEDIF(A1,B1,"Y") & " Years, " & DATEDIF(A1,B1,"YM") & " Months, " & DATEDIF(A1,B1,"MD") & " Days"
Edited:
Counting number of days between two Dates is little bit arbitrary. Basically depends on need.
- Count number of days, Excluding Start
Date. - Count number of days, Including Start
Date. - Count number of days, Excluding both
Start & End Date.
Considering OP's Sample Dates following Formula can be used.
Formula for situation 1:
=DATEDIF(B2,B3,"d")
=DAYS(B3,B2)
=INT(B3-B2)
Formula for situation 2:
=DATEDIF(B2,B3,"d")+1
=DAYS(B3,B2)+1
=INT(B3-B2+1)
Formula for situation 3:
=DATEDIF(B2,B3,"d")-1
=DAYS(B3,B2)-1
=INT(B3-B2-1)
Adjust Cell references in the Formula as needed.
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
edited Mar 26 at 10:11
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
answered Mar 25 at 12:45
Rajesh SRajesh S
4,4202724
4,4202724
3
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding((B1-A1)+1)/365.25.It's really unfortunate to get DOWN VOTE after All !!
– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!=INT((B1-A1)/365)
– Rajesh S
Mar 25 at 13:05
3
INT((B1-A1)/365)can provide the wrong result if there is are leap years involved.
– Chris Rogers
Mar 25 at 13:21
|
show 2 more comments
3
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding((B1-A1)+1)/365.25.It's really unfortunate to get DOWN VOTE after All !!
– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!=INT((B1-A1)/365)
– Rajesh S
Mar 25 at 13:05
3
INT((B1-A1)/365)can provide the wrong result if there is are leap years involved.
– Chris Rogers
Mar 25 at 13:21
3
3
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
This is over complicating things and doesn't answer the question (how many days). The OP is not asking number of years or years, months and days.
– Chris Rogers
Mar 25 at 12:55
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding
((B1-A1)+1)/365.25. It's really unfortunate to get DOWN VOTE after All !!– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, Read my post I've suggested all possible Formula, including the OP's one, regarding
((B1-A1)+1)/365.25. It's really unfortunate to get DOWN VOTE after All !!– Rajesh S
Mar 25 at 12:58
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, this is part of OP,,But often I seen when people are calculating the number of days between 2 dates or age they use the formula B1-A1
– Rajesh S
Mar 25 at 13:02
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!
=INT((B1-A1)/365)– Rajesh S
Mar 25 at 13:05
@ChrisRogers,, considering the Formula OP has written and I've shown in comments ,, my solution has Focused on ALL that and the Suggested one is an improvise version I've shown with my Answer !!
=INT((B1-A1)/365)– Rajesh S
Mar 25 at 13:05
3
3
INT((B1-A1)/365) can provide the wrong result if there is are leap years involved.– Chris Rogers
Mar 25 at 13:21
INT((B1-A1)/365) can provide the wrong result if there is are leap years involved.– Chris Rogers
Mar 25 at 13:21
|
show 2 more comments
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2
7 - 1 is 6, no? What is correct depends on your definition and whether you include timestamps or not. When subtracting 20190101T00:00:00 from 20190107T23:59:59, you get 6.999, which can be rounded appropriately.
– slhck
Mar 25 at 12:38
@slhck That really makes sense when you think about the time as well as date.
– Naz
Mar 25 at 12:54
7
If start date/dob and today are the same day, do you want the answer to be 0 or 1? B1-A1 is the number of complete days that have past.
– Forward Ed
Mar 25 at 13:28
2
You're asking whether exclusive or inclusive operations are correct. They're both correct, depending on what you are trying to achieve. See @Chris Rogers's answer below.
– studog
Mar 25 at 18:56
(1) Well, there’s also the point of view that there are 5 days between 1 January and 7 January. See this. (2) If a person was born on 27 March 1959, on what day did they turn 20? 27 March 1979. Now, if
B1= 27 March 1979 andA1= 27 March 1959, what does your formula say? What does it say forB1= 26 March 1979?– Scott
Mar 27 at 5:14