How to Subtract Dates in Excel

If we have an Excel piece with a lot of dates, chances are we will eventually need to calculate a differences between some of those dates. Maybe we wish to see how many months it took we to compensate off your debt or how many days it took we to remove a certain volume of weight?

Calculating a disproportion between dates in Excel is easy, though can turn difficult depending on how we wish to calculate certain values. For example, if we wanted to know a series of months between 2/5/2016 and 1/15/2016, should a answer be 0 or 1? Some people competence contend 0 given it’s not a full month between a dates and others competence contend 1 since it’s a opposite month.

In this article, I’ll uncover we how to calculate a differences between dual dates to find a series of days, months and years with opposite formulas, depending on your preferences.

Days Between Two Dates

The simplest calculation we can do is to get a series of days between dual dates. The good thing about calculating days is that there unequivocally is usually one approach to calculate a value, so we don’t have to worry about opposite formulas giving we opposite answers.

days between dates

In my instance above, we have dual dates stored in cells A2 and A3. At a right, we can see a disproportion between those dual dates is 802 days. In Excel, there are always mixed ways to calculate a same value and that’s what we did here. Let’s take a demeanour during a formulas:

calculate days excel

The initial regulation is usually a elementary division of a dual dates, A3 – A2. Excel knows it’s a date and simply calculates a series of days between those dual dates. Easy and unequivocally straight-forward. In addition, we can also use a DAYS function.

=DAYS(A3, A2)

This duty takes dual arguments: a finish date and a start date. If we switch a dates in a formula, you’ll usually get a disastrous number. Lastly, we can use a duty called DATEDIF, that is enclosed in Excel from Lotus 1-2-3 days, though isn’t an strictly upheld regulation in Excel.

=DATEDIF(A2, A3, "D")

When we form a formula, you’ll see that Excel does not give we any suggestions for a fields, etc. Luckily, we can see a syntax and all upheld arguments for a DATEDIF duty here.

As an combined bonus, what if we wanted to calculate a series of weekdays between dual dates? That’s easy adequate also since we have a built-in formula:


Calculating a series of days and weekdays is elementary enough, so let’s speak about months now.

Months Between Two Dates

The trickiest calculation is a series of months since of how we can possibly turn adult or turn down depending on either it’s a finish month or a prejudiced month. Now there is a MONTHS duty in Excel, though it’s unequivocally singular since it will usually demeanour during a month when calculating a disproportion and not a year. This means it’s usually useful for calculating a disproportion between dual months in a same year.

Since that is kind of pointless, let’s demeanour during some formulas that will get us a scold answer. Microsoft has supposing these here, though if we are too idle to revisit a link, we have supposing them next also.

Round Up - =(YEAR(LDate)-YEAR(EDate))*12+MONTH(LDate)-MONTH(EDate)
Round Down - =IF(DAY(LDate)=DAY(EDate),0,-1)+(YEAR(LDate)-YEAR(EDate))

Now these are dual sincerely prolonged and difficult formulas and we unequivocally don’t need to know what’s going on. Here are a formulas in Excel:

months disproportion forumla

Note a we should revise a turn down regulation in a tangible dungeon itself since for some peculiar reason a whole regulation does not uncover adult in a regulation bar. In sequence to see a regulation in a dungeon itself, click on a Formulas add-on and afterwards click Show Formulas.

show formulas

So what’s a final outcome of a dual formulas on a stream example? Let’s see below:

months difference

Round adult gives me 27 months and turn down gives me 26 months, that is accurate, depending on how we wish to demeanour during it. Lastly, we can also use a DATEDIF function, though it usually calculates full months, so in a box a answer it earnings is 26.

=DATEDIF(A2, A3, "M")

Years Between Two Dates

As with months, years can also be distributed depending on either we wish to count 1 year as a full 365 days or if a change in a year counts. So let’s take a instance where we have used dual opposite formulas for calculating a series of years:

year disproportion formula

One regulation uses DATEDIF and a other uses a YEAR function. Since a disproportion in a series of days is usually 802, DATEDIF shows 2 years since a YEAR duty shows 3 years.

year difference

Again, this is a matter of welfare and depends on what accurately we are perplexing to calculate. It’s a good thought to know both methods so that we can conflict opposite problems with opposite formulas.

As prolonged as we are clever with that formulas we use, it’s sincerely easy to calculate accurately what we are looking for. There are also a lot some-more date functions outward of a ones we mentioned, so feel giveaway to check those out also on a Office Support site. If we have any questions, feel giveaway to comment. Enjoy!

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