Calculate days, months and years between two dates in Google Sheets: DATEDIF formulas

Today's blog post is all about figuring out the difference between two dates in Google Sheets. You will see lots of DATEDIF formulas to count days, months and years, and learn how NETWORKDAYS is used to count workdays only even if your holidays are based on a custom schedule.

Lots of spreadsheets users find dates confusing, if not extremely difficult, to handle. But believe it or not, there are a few handy and straightforward functions for that purpose. DATEDIF and NETWORKDAYS are a couple of them.

DATEDIF function in Google Sheets

As it happens with functions, their names suggest the action. The same goes for DATEDIF. It must be read as date dif, not dated if, and it stands for date difference. Hence, DATEDIF in Google Sheets calculates the date difference between two dates.

Let's break it down to pieces. The function requires three arguments:

=DATEDIF(start_date, end_date, unit)
  • start_date – a date used as a starting point. It must be one of the following:
    • a date itself in double-quotes: "8/13/2020"
    • a reference to a cell with a date: A2
    • a formula that returns a date: DATE(2020, 8, 13)
    • a number that stands for a particular date and that can be interpreted as a date by Google Sheets, e.g. 44056 represents August 13, 2020.
  • end_date – a date used as an endpoint. It must be of the same format as the start_date.
  • unit – is used to tell the function what difference to return. Here's a full list of units you can use:
    • "D" – (short for days) returns the number of days between two dates.
    • "M" – (months) the number of full months between two dates.
    • "Y" – (years) the number of full years.
    • "MD" – (days ignoring months) the number of days after subtracting whole months.
    • "YD" – (days ignoring years) the number of days after subtracting whole years.
    • "YM" – (months ignoring years) the number of complete months after subtracting full years.
Note. All units must be put to formulas the same way they appear above – in double-quotes.

Now let's piece all these parts together and see how DATEDIF formulas work in Google Sheets.

Calculate days between two dates in Google Sheets

Example 1. Count all days

I have a small table to track some orders. All of them have been shipped in the first half of August – Shipping date – which is going to be my start date. There's also an approximate delivery date – Due date.

A small table with orders.

I'm going to calculate days – "D" – between shipping and due dates to see how long it takes for items to arrive. Here is the formula I should use:

=DATEDIF(B2, C2, "D")

Calculate days between two dates in Google Sheets.

I enter the DATEDIF formula to D2 and then copy it down the column to apply to other rows.

Tip. You can always calculate the entire column at once with a single formula using ARRAYFORMULA:

=ArrayFormula(DATEDIF(B2:B13, C2:C13, "D"))

Array formula to calculate days between two dates in Google Sheets.

Example 2. Count days ignoring months

Imagine there are a few months between two dates:

How many months there are between dates?

How do you count only days as if they belonged to the same month? That's right: by ignoring full months that have passed. DATEDIF calculates this automatically when you use the "MD" unit:

=DATEDIF(A2, B2, "MD")

Calculate days between two dates in Google Sheets after subtracting months.

The function subtracts elapsed months and counts remaining days.

Example 3. Count days ignoring years

Another unit – "YD" – will aid for when dates have more than a year between them:

=DATEDIF(A2, B2, "YD")

Subtract years and calculate remaining days between two dates in Google Sheets.

The formula will subtract years first, and then calculate remaining days as if they belonged to the same year.

Count working days in Google Sheets

There is a special case when you need to count only working days in Google Sheets. DATEDIF formulas won't be much of a help here. And I believe you will agree that subtracting weekends manually is not the most elegant option.

Luckily, Google Sheets has a couple of not-so-magic spells for that :)

Example 1. NETWORKDAYS function

The first one is called NETWORKDAYS. This function calculates the number of working days between two dates excluding weekends (Saturday and Sunday) and even holidays if necessary:

=NETWORKDAYS(start_date, end_date, [holidays])
  • start_date – a date used as a starting point. Required.
    Note. If this date is not a holiday, it is counted as a working day.
  • end_date – a date used as an endpoint. Required.
    Note. If this date is not a holiday, it is counted as a working day.
  • holidays – this one is optional for when you need to point out specific holidays. It must be a range of dates or numbers representing dates.

To illustrate how it works, I will add a list of holidays that take place in-between shipping and due dates:

A table of orders and US holidays.

So, column B is my start date, columns C – end date. Dates in column E are the holidays to consider. Here is how the formula should look:

=NETWORKDAYS(B2, C2, $E$2:$E$4)

Count working days in Google Sheets.

Tip. If you're going to copy the formula to other cells, use absolute cells references for holidays to avoid errors or incorrect results. Or consider building an array formula instead.

Have you noticed how the number of days decreased compared to the DATEDIF formulas? Because now the function automatically subtracts all Saturdays, Sundays, and two holidays that take place on Friday and Monday.

Note. Unlike DATEDIF in Google Sheets, NETWORKDAYS counts start_day and end_day as workdays unless they are holidays. Hence, D7 returns 1.

Example 2. NETWORKDAYS.INTL for Google Sheets

If you have a custom weekend schedule, you will benefit from another function: NETWORKDAYS.INTL. It lets you count working days in Google Sheets based on personally set weekends:

=NETWORKDAYS.INTL(start_date, end_date, [weekend], [holidays])
  • start_date – a date used as a starting point. Required.
  • end_date – a date used as an endpoint. Required.
    Note. NETWORKDAYS.INTL in Google Sheets also counts start_day and end_day as workdays unless they are holidays.
  • weekend – this one is optional. If omitted, Saturday and Sunday are considered to be weekends. But you can alter that using two ways:
    • Masks.
      Tip. This way is perfect for when your days off are scattered all over the week.

      Mask is a seven-digit pattern of 1's and 0's. 1 stands for a weekend, 0 for a workday. The first digit in the pattern is always Monday, the last one – Sunday.

      For example, "1100110" means that you work on Wednesday, Thursday, Friday, and Saturday.

      Note. The mask must be put in double-quotes.
    • Numbers.

      Use one-digit numbers (1-7) that denote a pair of set weekends:

      Number Weekend
      1 Saturday, Sunday
      2 Sunday, Monday
      3 Monday, Tuesday
      4 Tuesday, Wednesday
      5 Wednesday, Thursday
      6 Thursday, Friday
      7 Friday, Saturday

      Or work with two-digit numbers (11-17) that denote one day to rest within a week:

      Number Weekend day
      11 Sunday
      12 Monday
      13 Tuesday
      14 Wednesday
      15 Thursday
      16 Friday
      17 Saturday
  • holidays – it is also optional and is used to specify holidays.

This function may seem complicated because of all those numbers, but I encourage you to give it a try.

First, just get a clear understanding of your days off. Let's make it Sunday and Monday. Then, decide on the way to indicate your weekends.

If you go with a mask, it will be like this – 1000001:

=NETWORKDAYS.INTL(B2, C2, "1000001")

But since I have two weekend days in a row, I can use a number from the tables above, 2 in my case:


Then simply add the last argument – refer to holidays in column E, and the formula is ready:

=NETWORKDAYS.INTL(B2, C2, 2, $E$2:$E$4)

Set your custom weekends using NETWORKDAYS.INTL in Google Sheets.

Google Sheets and date difference in months

Sometimes months matter more than days. If this is true for you and you prefer getting the date difference in months rather than days, let Google Sheets DATEDIF do the job.

Example 1. The number of full months between two dates

The drill is the same: the start_date goes first, followed by the end_date and "M" – that stands for months – as a final argument:

=DATEDIF(A2, B2, "M")

Figure out the number of months between two dates.

Tip. Don't forget about the ARRAUFORMULA function that can help you count months on all rows at once:


Example 2. The number of months ignoring years

You may not need to count months throughout all years in-between start and end dates. And DATEDIF lets you do that.

Just use the "YM" unit and the formula will subtract whole years first, and then count the number of months between dates:

=DATEDIF(A2, B2, "YM")

Calculate the number of months between two dates ignoring elapsed years.

Calculate years between two dates in Google Sheets

The last (but not least) thing to show you is how Google Sheets DATEDIF calculates the date difference in years.

I'm going to calculate the number of years couples have been married based on their wedding dates and today's date:

How many years has passed since their weddings?

As you may have already guessed, I will use the "Y" unit for that:

=DATEDIF(A2, B2, "Y")

Calculate Google Sheets date difference in full years.

All these DATEDIF formulas are the first to try when it comes to calculating days, months, and years between two dates in Google Sheets.

If your case can't be solved by these or if you have any questions, I encourage you to share them with us in the comments section below.

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28 comments to "Calculate days, months and years between two dates in Google Sheets: DATEDIF formulas"

  1. JES says:

    hi. I would like to calculate let say 20 days after the certain date. I am looking to set up a formula. thanks

  2. Waahida Jones says:

    I am receiving different results for the same data range and formula

    I have a start and end date that are the same and I am using this formula

    J16 = 1/19/2022
    S16 = 1/19/2022
    Results in 0

    Note: If I remove the -1 at the end, it gives me a 1 but the difference between the dates is 0

    I also have the same formula for another date range and its giving me a -1


    J17 = 1/23/2022
    S17 = 1/23/2022
    Results in -1

    Snip of Holiday tab
    Holiday Capital One Observed Date
    New Year's Day 2022 12/31/2021
    Dr. Martin Luther King Jr. Day 1/17/2022
    Presidents' Day 2/21/2022

    Please help, I can't figure out the discrepancy

  3. Dontae Mears says:

    Hi Natalia,

    Hoping to calculate months between two dates but looking for the ability to count half months. so if we start on Oct. 15, 2021 and end on January, 31, 2021, would like to see 3.5 as the calculation result. Any solutions?


  4. Gwen says:

    If I have a networkdays formula that shows me the working days and I want to further break that down to show me working days per each month in the date range that is being calculated what formula would I use ?

    Got example if the date range is
    July 14,2021 to March 15,2022 and I use network days to figure out the number of working days based on a Monday to Friday
    How can I break that’d down further to give me the number of days worked in July,August,sept ,oct etc

  5. Graham Garven says:

    I am trying to use DATEDIF to calculate number of months worked . The reference cells for start and end dates are formulas. Even though the formula cells and the input cells are formatted as dates the DATEDIF function returns an error saying they are to resolve this please?

  6. Lisa says:

    Hello! Which number format does the result cell need to be? I've tried the majority and the output is still 0. Can you help? Thanks!

    • Hello Lisa,

      The Number format should do the trick. If it doesn't work, consider sharing an editable copy of your spreadsheet with us ( and specify the cells to look into. If you have confidential information there, you can replace it with some irrelevant data, just keep the format.

      Note. We keep that Google account for file sharing only and don't monitor its Inbox. Please do not email there. Once you share the file, just confirm by replying to this comment.

  7. Ankit Sharma says:

    hello i want to put 2 formulas in one cell e.g

    10Jan. 15jan

    latefee =(15jan,10jan,”D” now i want to multiplye result with 100 ????
    please help

  8. Harvey says:

    Hi Natalia

    I am setting up a Google Sheet designed to track project duration, and need a formula to calculate how long a project took to complete.

    For example:

    Project Start: 30/3/21 at 12:00pm
    Project End: 7/4/21 at 5:00pm

    I would like a connected cell to autofill with the HOURS taken to complete the project (excluding weekends).

    The duration is 148 hours (197- 48)

    Assuming Start Date is B2 and End Date is C2, how can I get D2 to calculate the 148 correctly?

    This article goes some way to explain the process, but not quite all of it.

    Is there a one-line formula that will solve this query?


      • Harvey says:

        This worked perfectly. Thank you!

        One small glitch - cells to which I've embedded the formula autofill to "-56:00" (negative 56 hours)... But it's not a big issue. Thanks so much.

        • Harvey,

          negative hours may appear if you accidentally change start and end dates places or reference wrong cells. If you'd like, you could share your spreadsheet with us (, we'd look into it as well.

          Note. We keep that Google account for file sharing only, please do not email there. Once you share the file, just confirm by replying to this comment.

  9. Spruha says:

    I'd like to calculate how long a task has been pending, so I have a start date, and I want the "end date" to be today, so I can automatically calculate how many months have been spent on a project. Is there a way to use DATEDIF to do that? Thanks!

  10. Hirda says:

    I have invoice date and due date. I can use the formula to calculate the remaining days before due date but how can i stop the calculation or it return as "0" once the column remarks show PAID (manually insert)? Any formula i can combine or do u have some ideas?

    Thanks. Appreciate your help

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