How to convert time to decimal number, hours, minutes or seconds in Excel

The tutorial demonstrates different ways to convert time to decimal in Excel. You will find a variety of formulas to change time to hours, minutes or seconds as well as convert text to time and vice versa.

Because Microsoft Excel uses a numeric system to store times, you can easily turn hours, minutes and seconds into numbers that you can use in other calculations.

In general, there are two ways to convert time to decimal in Excel - by changing the cell format and by using arithmetic calculations or Excel time functions, such as HOUR, MINUTE and SECOND. Further on in this tutorial, you will find the detailed explanation of the first way and formula examples demonstrating the other technique.

How to convert time to decimal number in Excel

Overall, there are three ways to change a time value to a decimal number: arithmetic operation, CONVERT function or a combination of three different Time functions.

The easiest way to convert time to decimal in Excel is to multiply the original time value by the number of hours, seconds or minutes in a day:

  • To convert time to a number of hours, multiply the time by 24, which is the number of hours in a day.
  • To convert time to minutes, multiply the time by 1440, which is the number of minutes in a day (24*60).
  • To convert time to seconds, multiply the time time by 86400, which is the number of seconds in a day (24*60*60 ).

Convert time to a decimal number in Excel

In the following sections, you will learn the other methods of converting times to a decimal number in Excel.

How to convert time to hours in Excel

This section demonstrates 3 different formulas to convert hours from the standard time format (hh:mm:ss) to a decimal number.

Formula 1: Arithmetic calculation

You already know the fastest way to convert a time value to a number of hours in Excel - multiplying by 24, i.e. by the number of hours in one day:

=A2*24

Where A2 is the time value.

To get the number of compete hours, embed the above formula in the INT function that will get rid of the fractional part:

=INT(A2*24)
The formula and arithmetic calculation to convert time to hours in Excel

Formula 2: CONVERT function

Another way to perform the "time > hours" conversion is to use the following Convert formula:

=CONVERT(A2, "day", "hr")

Formula 3: HOUR, MINUTE and SECOND functions

Finally, you can use a bit more complex formula, whose logic, however, is quite obvious. Extract the individual time units by using the HOUR, MINUTE and SECOND functions, then divide minutes by 60 (the number of minutes in an hour) and seconds by 3600 (the number of seconds in an hour), and add up the results:

=HOUR(A2) + MINUTE(A2)/60 + SECOND(A2)/3600

How to convert time to minutes in Excel

The same three methods can be used to convert minutes from the standard time format to a decimal number.

Formula 1: Arithmetic calculation

To convert time to total minutes, you multiply time by 1440, which is the number of minutes in one day (24 hours * 60 minutes = 1440):

=A2*1440

If you want to return the number of compete minutes, utilize the INT function like in the previous example:

=INT(A2*1440)

You can view the results in the screenshot below:
Converting time to minutes in Excel

Formula 2: CONVERT function

To do the "time > minutes" conversion with the CONVERT(number, from_unit, to_unit) function, supply "day" as the unit to convert from and "mn" as the unit to convert to:

=CONVERT(A2, "day", "mn")

Formula 3: HOUR, MINUTE and SECOND functions

One more way to get the number of minutes is to multiply hours by 60 and divide seconds by the same number:

=HOUR(A2)*60 + MINUTE(A2) + SECOND(A2)/60

How to convert time to seconds in Excel

Converting time to total seconds in Excel can be done in a similar fashion.

Formula 1: Arithmetic calculation

Multiply the time value by 86400, which is the number of seconds in a day (24 hours * 60 minutes * 60 seconds = 86400):

=A2*86400
Converting time to seconds in Excel

Formula 2: CONVERT function

The formula is basically the same as in the above examples with the only difference that you convert the "day" unit to "sec":

=CONVERT(A2, "day", "sec")

Formula 3: HOUR, MINUTE and SECOND functions

Use the HOUR, MINUTE and SECOND functions like in the two previous examples (I believe at this point you don't need any further explanation of the formula's logic :)

=HOUR(A2)*3600 + MINUTE(A2)*60 + SECOND(A2)

Tips:

  1. If any of the above formulas returns a value formatted as time, simply change the cell's format to Generalto display it as a number.
  2. To convert time to a decimal number that represents the time in the internal Excel system, apply the General format to the cell. With this approach, 23:59:59 will be converted to 0.99999, 06:00 AM to 0.25, and 12:00 PM to 0.5. If an integer part of the converted number is greater than zero, it means that your cell contains both date and time values.

How to split date and time in Excel

As is often the case, your Excel worksheet may contain dates and times in one cell, while you want to split them into two separate cells.

Remembering that in the internal Excel system the date value is stored as a whole part and the time value as a fractional part of a decimal number, you can extract the date using the INT function, which rounds the cell value down to the nearest integer.

Supposing your original dates and times are in column A, the following formula will accomplish the separation:

=INT(A2)
Use the INT function to extract the date values

To extract the time portion, subtract the date returned by the above formula from the original date and time value:

=A2-B2

Where column A contains the original date & time values and column B contains the dates returned by the INT function.

If you'd rather not have time values linked to the separated dates (for example, you may want to remove the date column in the future), you can use the following MOD formula that refers to the original data only:

=MOD(A2,1)
Splitting date and time in Excel

Tip. If the separated date and time values are not displayed properly, change the format of the new columns to Date and Time, respectively.

This is how you split date and time in Excel. If you want to further separate hours, minutes and seconds into individual columns, then use the HOUR, MINUTE and SECOND functions, as demonstrated in How to get hours, minutes and seconds from a timestamp.

How to spell time in Excel

Sometimes, you may need to convert time into the format that reads something like "# days, # hours, # minutes and # seconds". A good thing is that you already know all the ingredients of the formula:

  • Extract days using the INT function;
  • Extract time units with HOUR, MINUTE and SECOND functions, and
  • Concatenate all parts in a single formula.

Having difficulties with figuring out a proper formula for your worksheet? The following example will make things easy!

Supposing you have the dates of upcoming events in column B beginning in cell B4, and the current date and time returned by the NOW() function in cell B1.

The formula to calculate the time difference is as simple as =B4-$B$1. Of course, nothing prevents you from subtracting the current date and time directly with =B4-NOW().

And now, let's make a countdown timer that would show how many days, hours, minutes and seconds are left until each event.
Setting up a countdown timer in Excel

The formula to enter in cell D4 is as follows:

=INT(C4) & " days, " & HOUR(C4) & " hours, " & MINUTE(C4) & " minutes and " & SECOND(C4) & " seconds"
The formula to spell time in Excel

If you wish to get rid of 0 values, like in cells D6 and D7 in the screenshot above, then include the following IF statements:

=IF(INT(C4)>0, INT(C4)&" days, ","") & IF(HOUR(C4)>0, HOUR(C4) & " hours, ","") & IF(MINUTE(C4)>0, MINUTE(C4) & " minutes and ","") & IF(SECOND(C4)>0, SECOND(C4) & " seconds","")

All zeros are gone!
The formula to spell time in Excel excluding zero values

Note. When either of the above formulas refers to a negative number, the #NUM! error will appear. This may happen when you subtract a bigger time from a smaller one.

An alternative way to write time in words in Excel is to apply the following custom time format to the cell: d "day," h "hours," m "minutes and" s "seconds". No formulas and no calculations are required! For more information, please see Creating a custom time format in Excel.

Convert text to time in Excel

If your time formulas and calculations do not work right, time values formatted as text is often the cause. The fastest way to convert text to time in Excel is using the TIMEVALUE function.

The Excel TIMEVALUE function has just one argument:

TIMEVALUE(time_text)

Time_text is a text string in any of the time formats that Excel can recognize. For example:

=TIMEVALUE("6:20 PM")

=TIMEVALUE("6-Jan-2015 6:20 PM")

=TIMEVALUE(A2) where A2 contains a text string
Convert text to time using the Excel TIMEVALUE function

As you see, the formulas with cell references and corresponding text strings deliver identical results. Also, please notice the left alignment of time strings (text values) in cells A2 and A6 and right-aligned converted time values in column D.

Convert time to text in Excel

Supposing you have an Excel file full of times formatted to look like "8:30:00 AM" and you want to convert them to the text format. Simply changing the cell's format to TEXT won't work because this would change your time values to underlying numeric representation of the time. For example, 8:30:00 AM will be converted to decimal 0.354166666666667.

So, how do you convert cells to the text format so that your cells still have the time in them? The answer is to use the TEXT function that converts a numeric value to text with the display formatting that you specify, for example:

=TEXT($A2,"h:mm:ss")

The screenshot below demonstrates other possible formats:
Converting time to text in Excel

How to convert numbers to time format in Excel

If you have a list of numbers such as 1, 2, 3.5 and you want to convert them to a time format, for example 1:00:00, 2:00:00 or 3:30 AM, perform the following steps.

  1. Divide the numbers by 24 (there are 24 hours in a day). The formula can be as simple as =A2/24.
  2. Select the cell(s) with the formula result, right-click and select Format Cells from the context menu or press Ctrl+1. Either way, the Format Cells dialog will appear, you select Time on the left pane under Category, and choose the format you want on the right pane under Type. Please see How to format time in Excel for more details.

Converting numbers to the time format in Excel

If your time exceeds 24 hours, 60 minutes, 60 seconds, use these guidelines to correctly show it.

That's all for today. If someone wants to get the first-hand experience with the formulas discussed in this article, you are most welcome to download the sample workbook below.

If you want to learn a few more useful formulas to calculate times in Excel, please check out the related tutorials at the end of this page. I thank you for reading and hope to see you again next week!

Practice workbook for download

Converting time in Excel - examples (.xlsx file)

457 comments

  1. I've downloaded a csv file that has a time on it but when I convert to Excel and use a formula on it it shows as the decimal equivalent of the number and not the time ,I cannot get to change to a time format that equals the original downloaded number/time

    • Hello Geoff!
      Please try the formual below to convert time from a decimal number to "hh:mm:ss":
      =TIME(D1, MOD(D1, 1)*60, 0)

      That should do the trick.

      • thank you but the issue I have would be say i wanted to concatenate 2 cells ..... one with contents CPark and the other 10:46 AM the concatenate function results CPark0.4486111111111111 rather than CPark10:46
        your suggestions effect upon the original 10:46 AM cell returns 12:26AM
        thank you for your help so far though

        • Hello Geoff,

          Thank you for the clarification. In this case, formual below will convert your data from time to text:
          =CONCATENATE(A1, TEXT(B1, "hh:mm AM/PM"))

          That should do the trick.

          • sorry that is not the answer thanks Alexander although its probably on the right track
            I cannot find the solution anywhere on the internet

          • working now thank you Alexander !!!!

            • so when I use a look up to cross reference 2 sheets in the same workbook even though I have the concatenate correct it doesn't pick up the cell I need ...can anyone have a look at the file if I send it to them to see where Im going wrong please ? I'm sure its due to the time format mentioned above that even though they look the same in the cell ref they are not .....

  2. Hello,
    In my excel spreadsheet I have column totally the number of hours in total (ex: from (9 am to to 10:30 am = 1.3) I would like to convert the 1.3 to 1.5. How add this function in my existing formula: =IF(k3≥J3,K3-J3,1-K3+J3)*L3..... L3 being the hours in total.
    Thank you!

    • Hello Danielle!
      If I understand your task correctly, you need to convert time from HH:MM:SS format to decimals. If so, you just need to multiply it by 24 (for example, =А3*24) and set the General format for this cell.

  3. Has anyone actually found a resolution conversion for "D HRS:MIN:SEC" to "HRS"?
    eg. 1 22:12:00

  4. I know I'm asking a lot here but could you explain how to convert "Duration in seconds (Unix)" to a readable format of years,months,weeks,days,seconds in Excel? I see all sorts of ways to convert date to date, etc but not "duration" of time in seconds! I need a way to convert it into a readable format of years, months, weeks, days, hours and seconds. I can do it in Perl, C and others but not in Excell. If you can help I have a few examples of what the end result needs to be in specific representations such as (11W) for 11 weeks or (13W2D) for 13 weeks and two days or (1Y26W6D) 1 year, 26weeks, 6days and even further. Here are a few examples...

    Duration in Seconds:
    1) 6652800 and the output would be 11W or 11(W)eeks
    2) 8035200 and the output would be 13W2D or 13(W)eeks 2(D)ays
    3) 47779200 and output would be 1Y26W6D or 1(Y)ear 26(W)eeks and 6(D)ays
    4) 47779200 seconds and output would be 1Y6M5D3H16M51S or 1(Y)ear,6(M)onths,5(D)ays,3(H)ours,16(M)inutes,51(S)econds
    and/or convert years into months...
    5) 47779200 output to 18M5D3H16M51S or 18(M)onths,5(D)ays,3(Hours),16(M)inutes,51(S)econds

    Does this make sense? I'm not in a big hurry so if this is to much at this time don't worry about it. I'll keep looking around and I want to say: I really appreciate your taking the time to help with your explanations and this web site, these examples and explanations some of my make daily stuff much easier and I really appreciate how you offer so much expertise to everyone.

    Many Thanks!!
    Dave C.

  5. 11.2hrs convert to days,hrs,min
    formula pls?

  6. If Hour minute and second value 1370:06:09 in this format then how to separate hours minute and second.
    Pls suggest.

  7. how to convert in date & Time format below value
    20001124204143.0Z

    • I will try with Mod formula but 2020 value showing wrong this will shows in filter as 2020 Jan to Dec but still running feb month and when we check in Ctrl+Shift+3 format in 2020 date then showing another date.

  8. Hello everybody!
    I can't find within the answers … I'm having difficulties with changing minutes and second in format 35:12 into seconds. Result I am looking for should be 2112.
    Thanks"

  9. hour calculation - after sum total hour is 18:90: I want to I change from the 18:90 (18 hrs 90 min) in order to become 19 hrs 30 min. Can you I change it in Excel?

    thank you

  10. Start 6:45 7:28 7:00 7:27 6:28 6:59 13:00
    Finish 22:48 23:00 23:35 22:15 22:54 22:31 22:03
    H:min 16:03 15:32 16:35 14:48 16:26 15:32 9:03
    How do we add these hours and mins to hours only in Excel?

  11. Trying to convert to below to minutes with out text

    Notify to Last Assign Transit Time Total In Progress Time Turnaround Time
    1h 14m 1m 40m 58m

  12. Creating an Excel spreadsheet to use as a time card to keep track of the hours worked, I have used the formula =IF(end>start, end-start, 1-start+end) to reflect there are times I'll elapse (i.e. - go beyond midnight) to calculate the total number of hours. Now I need to convert that time into an hour and decimal minutes format to be able to calculate regular pay and overtime pay. How do I do that?

  13. I WANT TO ADD TIME VALUE AS U/M:-
    A1 = 93:01:00
    B1 =13349:50:00
    C1 = REQUIRED FORMULA TO ADD ABOVE MENTIONED TIME VALUE.
    THANKS

  14. Sir,

    Date Shift ArrTim LateHrs DepTim EarlHrs WrkHrs OvTim Present

    01/12/2019 G 0.00
    02/12/2019 G 9.56 18.00 8.04 1.00
    03/12/2019 G 9.56 18.01 8.05 1.00
    04/12/2019 G 9.46 18.01 8.15 1.00
    05/12/2019 G 9.57 18.01 8.04 1.00
    06/12/2019 G 9.47 18.18 8.31 1.00
    07/12/2019 G 9.57 18.00 8.03 1.00
    08/12/2019 G 0.00
    09/12/2019 G 9.47 18.00 8.13 1.00
    10/12/2019 G 9.56 18.01 8.05 1.00
    11/12/2019 G 9.57 18.00 8.03 1.00
    12/12/2019 G 9.47 18.00 8.13 1.00
    13/12/2019 G 9.58 18.01 8.03 1.00
    14/12/2019 G 10.26 0.26 18.00 7.34 1.00
    15/12/2019 G 0.00
    16/12/2019 G 10.05 0.05 18.01 7.56 1.00
    17/12/2019 G 9.56 18.00 8.04 1.00
    18/12/2019 G 9.56 18.00 8.04 1.00
    19/12/2019 G 9.57 18.00 8.03 1.00
    20/12/2019 G 9.57 18.01 8.04 1.00
    21/12/2019 G 9.58 18.00 8.02 1.00
    22/12/2019 G 0.00
    23/12/2019 G 9.56 18.00 8.04 1.00
    24/12/2019 G 9.57 18.00 8.03 1.00
    25/12/2019 G 9.57 18.00 8.03 1.00
    26/12/2019 G 9.55 18.00 8.05 1.00
    27/12/2019 G 10.06 0.06 18.00 7.54 1.00
    28/12/2019 G 9.53 18.00 8.07 1.00
    29/12/2019 G 0.00
    30/12/2019 G 9.58 18.00 8.02 1.00
    31/12/2019 G 9.58 17.09 0.51 7.11 1.00

    kindly solve this how we calculated the total working hour's in that sheet
    here is mentioned that in time and out time and difference how many hour's working an employee in our office and after how to calculate total working hour's in a month kindly reply

    Thanks.

  15. Please support how to convert time into hours duration i.e. OUT Time 10:23:28 AM and IN Time 7:27:31 PM need to calculate the duration in Excel for bulk data.

    Thanks.

    • Hello Shahid,
      If you need the time difference in hh:mm:ss format, here is the formula for you:
      =IF(A2<A1, A2+1, A2)-A1

      Supposing the IN time is in A1 and OUT - in A2. If however, you need it to be a just number, the following formula will do the job:
      =HOUR(IF(A2<A1, A2+1, A2)-A1)+MINUTE(IF(A2<A1, A2+1, A2)-A1)/60

  16. How can convert 1 productivity = 8:30 hours in excel sheet example .5 = 4:15hours and .25 = 2 hours
    Time difference 15,30,45,60 minutes

  17. I WANT TO CONVERT HOURS TO minutes
    A/S CAST OFF TOTAL HRS TOTAL minutes
    15:50 19:25 3:35

  18. How to format hours by using IF...
    Let's say I want from 06:00am to 22:00pm be "morning" and 22:00pm to 06:00am be "night".
    Thank you.

    • Creating an Excel spreadsheet to use as a time card to keep track of the hours worked, I have used the formula =IF(end>start, end-start, 1-start+end) to reflect there are times I'll elapse (i.e. - go beyond midnight) to calculate the total number of hours. Now I need to convert that time into an hour and decimal minutes format to be able to calculate regular pay and overtime pay. How do I do that?

  19. Hi all,

    how to split 1 day 3 hours 17 minutes into hour and minutes separately?

  20. I have to convert value excel calculation is 100 qty is one hour this value i have convert in time format

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