Calculate the Number of Days, Months or
Years Between Two Dates
by Francis Hayes (The Excel Addict) Have you ever needed to
determine the number of days, months or years between two dates?
Calculating the number of days between two dats using Excel is pretty
simple. Just use a formula to subtract the later date from the earlier
date.
For example, if cell B1 contains 1Jan2013 and cell B2 contains 03Mar2013, you
simply enter the formula =B2B1 in cell B3 to get
the number of days. At first the result may look strange. That's
because Excel sometimes assumes you are entering another date and
automatically formats the result as a date.
You can easily correct that by
selecting General from
the Number format dropdown on theHome tab.
Your result then should be 61.
However, calculating the number of months or years between two dates
isn't so obvious.
There's a Function in Excel that makes this task easy but for some
reason Microsoft has hidden it away. You won't even find it in the
Paste Functions list (Formulas, Insert Function).
The function is called DATEDIF (i.e.
date difference).
The syntax for the function is
=DATEDIF(startdate,enddate,"interval").
Let's use the same dates as
above in our formula to calculate the
number of complete months between the two dates.
=DATEDIF(B1,B2,"m").
Similarly, the formula to
calculate the number of complete years is =DATEDIF(B1,B2,"y"),
although using the dates above would result in 0 'complete' years. By
changing B1 to a date a year or more earlier we can see the result.
A couple of things to keep in mind about the DATEDIF function:
1) The start date must be less
than or equal to the end date, otherwise it will give an error.
2) Acceptable interval codes
are "d", "m", "y", "ym", "yd", "md" (with quotes);
3) It may appear obvious what
the "ym", "yd", and "md" interval codes mean but they require a second
look. The "ym" interval code returns the number of months between the
two dates as if they were in the
same year and ignores the year. The "yd", and "md"
interval codes returns the number of days between the two dates as if they were in the
same year and ignores the year.
To calculate the number of years, months and days between
two dates (more than a year apart) you can use this formula (assuming
your start date is in cell B1 and your end date is in cell B2).
=DATEDIF(B1,B2,"y")
& " years, " & DATEDIF(B1,B2,"ym") & " months,"
& DATEDIF(B1,B2,"md") & " days"
To use this formula, Copy and Paste it into
your Excel formula bar, then adjust the cell references.
WOULD YOU LIKE TO DOUBLE YOUR
PRODUCTIVITY IN EXEL?
HOW ABOUT TRIPLE OR QUADRUPLE IT?
"Give me 10 or 15
minutes each week and I will show you how learning a few of my
timesaving Microsoft Excel tips on a regular basis will seem almost
effortless BUT will quickly help you DOUBLE, TRIPLE, or even QUADRUPLE
your productivity in Excel"  Francis Hayes, The Excel
Addict
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