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. Hello, thank you so much for this, below formula is what i need but in case i want to deduct the number of weekends in it, is it possible?

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

    im thinking if incorporating networkdays formula but i was not able to get the result i want

    thanks in advance Alexander

  2. May 1 2023 1:03AM
    May 1 2023 7:30AM
    Convert to M/DD/YYYY HH:MM:SS AM/PM format

    • Hi! If your date is written as text, use the formula below to convert it to date and time. Then apply the date and time custom format you want.

      =DATE(MID(A1,FIND("~",SUBSTITUTE(A1," ","~",2),1)+1,4), VLOOKUP(LEFT(A1,3), {"JAN",1;"FEB",2;"MAR",3;"APR",4;"May",5;"JUN",6;"JUL",7;"AUG",8;"Sep",9;"OCT",10;"NOV",11;"DEC",12},2,0), MID(A1,FIND(" ",A1,1)+1,2)) + TIMEVALUE(MID(A1,LEN(A1)-6,5)&" "&RIGHT(A1,2))

  3. I have a cell with numbers in the format of YYYYMMDDHHMMSS (20230501080229), need to convert to YYYY MM DD HH MM SS (2023 May 01 08:02:29) to easily read on the spreadsheet. Thank you.

    • Hi! Use the MID function to extract the required digits and create the date and time using the DATE and TIME functions.

      =DATE(MID(A1,1,4),MID(A1,5,2),MID(A1,7,2))+TIME(MID(A1,9,2),MID(A1,11,2),MID(A1,13,2))

      Set the date and time format you want in the cell, for example "yyyy mmmm dd hh:mm:ss"

  4. 2023-03-01T00:16:36+00:00
    2023-03-01T00:35:39+00:00
    2023-03-01T00:39:00+00:00
    2023-03-01T01:01:44+00:00
    2023-03-01T01:05:57+00:00
    2023-03-01T01:25:51+00:00
    2023-03-01T01:40:14+00:00
    2023-03-01T01:55:27+00:00
    2023-03-01T02:13:56+00:00
    2023-03-01T02:27:51+00:00
    2023-03-01T02:31:06+00:00
    2023-03-01T02:33:34+00:00
    2023-03-01T02:43:46+00:00
    2023-03-01T02:52:38+00:00
    2023-03-01T02:56:37+00:00
    2023-03-01T02:57:09+00:00
    2023-03-01T03:05:35+00:00
    2023-03-01T03:08:44+00:00
    2023-03-01T03:14:07+00:00
    2023-03-01T03:20:39+00:00
    2023-03-01T03:33:29+00:00
    2023-03-01T03:43:00+00:00
    2023-03-01T03:54:52+00:00
    2023-03-01T04:01:29+00:00
    2023-03-01T04:12:33+00:00
    2023-03-01T04:16:18+00:00
    2023-03-01T04:21:23+00:00
    2023-03-01T04:27:26+00:00
    2023-03-01T04:34:44+00:00

    I want to convert these timestamps into hourly basis

  5. Got time in decimal form and want 15,3722222222222 and want to form it into minutes and hours, tried =TEXT(A1/24;"h:mm:ss") with result: h:22:20 what am I doing wrong?

  6. Hello,

    I feel like I've tried everything. I have a report that needs to be converted to total minutes. See data example below.

    1d 05h 44m
    6h 16m
    3h 00m
    0m
    1h 02m
    1d 04h 36m

    I need to convert it to show the following in total minutes. Most of the formulas I've tried error when there is a cell that has only "m" or "h" and "m' data.

    1784
    376
    180
    0
    62
    1716

    Is that possible?

    Thanks!

  7. I have a column of Time say as below and rows with name. The format says General. I now wanted to show the same in a pivot but in Pivot its taking as 0:00:00 and not showing as follows. I have 3 ppl working on different days and some days its zero so wanted to know which day they had come and which day they didnt. Basically pivot is not capturing the time.

    03:59:13
    09:14:04
    08:36:58
    08:01:34

  8. I'm trying to convert 2 minutes & 30 seconds in excel from this format 2:30 into a decimal which should show as 2.5 minutes.
    Another example is 15 seconds currently shows as 0:15 in excel and I need it to show it as 0.25 minutes.
    How do I do that?

  9. i have wind data each 12 second and i wanted to change it to each 1 second with interpolation
    TIME WIND SPEED
    12:33:05 2
    12:33:10 2
    12:33:15 1
    12:33:21 1
    12:33:26 1
    12:33:31 2
    12:33:36 2
    12:33:41 2
    12:33:46 1
    12:33:51 1
    i need to change it to second time appreciate your help

  10. Hello, I am setting up a payroll calculator on excel and wanted to see if there is an if function or any function that I can use to calculate payroll correctly. I current input hours formatted as text and then multiply by 24 but It gets thrown off if there is a whole number.

      • i have data sheet for wind turbine in every 10 second i get wind speed, and i need to resample this data in every second (The model is
        based on a 1 s sample time, in order to resample the wind speeds the 10 s data was interpolated linearly between points)
        T W
        12:33:05 2
        12:33:10 2
        12:33:15 1
        12:33:21 1
        12:33:26 1
        12:33:31 2
        12:33:36 2
        12:33:41 2
        12:33:46 1
        12:33:51 1
        12:33:56 1
        12:34:01 1
        12:34:06 1
        12:34:11 1
        12:34:16 1
        12:34:21 1
        12:34:26 1
        12:34:31 1
        12:34:36 1
        12:34:41 1
        12:34:46 2
        12:34:52 2
        EXPECTED LIKE THIS
        12:33:05 2
        12:33:06 2.1
        12:33:07 2.15
        12:33:08 1.09
        12:33:09 1.51
        12:33:10 2
        12:33:11 2
        12:33:12 2
        12:33:13 1
        12:33:14 1
        12:33:15 1
        12:34:16 1
        12:34:17 1
        12:34:18 1
        12:34:19 1
        12:34:20 1
        12:34:21 1
        12:34:22 1
        12:34:23 1
        12:34:24 1
        12:34:25 2
        12:34:26 2

  11. I need to convert numbers to hours and mins
    2.03 is what I have in excel I need 2:03 is there away to format the data

  12. thank you! i was struggling for an hour to Sum a lot of work hours on a spreadsheet, converting the AM/PM hours with INT() then doing SUM() worked great!

  13. Hi!

    I would like to get your best guess on how to have a cycle time of a task calculated in the right way: data in one (!) cell is like "2 Days 5.49 Hours" as one example.

    I now would like to have following information: How many business hours does it take for a colleague to finish this job ?

  14. I would like to change the time from e.g. 1h 32m 4s to 01:32:04 without having to do it individually. How would I do this?

    • Hello!
      Extract the numbers from the text and use the TIMEVALUE function to convert the text to time. Try the formula:

      =TIMEVALUE(SUBSTITUTE(TRIM(CONCAT(IF(ISNUMBER(--MID(H1,ROW($1:$30),1)),MID(H1,ROW($1:$30),1)," ")))," ",":"))

      • hello dear,

        its work but once i have a time as a "01h 31sec " its dropped with wrong time
        how can be flexed becouse the time fromat that im tried to fixed it like this
        15h 30m 20s
        01h 30s

          • Its really work, bu unfortunately once i have the value as ( 01h 22sc ) its dropped

            • Hi!
              The formula doesn’t work since it has been created based on the details you provided in your first query. I see from your subsequent comment that your task differs from the one you originally described.
              If the time is not written down completely, the formula will not help.

  15. 1 days 2 hours 20 minutes How to convert it into 26 hours 20 minutes
    I tried but result is not yet got

    • Set up the number format to custom like that: [h]:mm

  16. I am trying to show total hours as days and hours with this formula as it shows Days hours and minutes which is what I need.
    =INT(C4) & " days, " & HOUR(C4) & " hours, " & MINUTE(C4) & " minutes and " & SECOND(C4) & " seconds"
    In C6 I have 40.00 hours carried over in column F6 is 4.0 hours extra holiday
    I add the hours together in H6 to show a total of 44 hours
    In column I have H6/8 = 5.5 days (working an 8-hour day).
    The formula shows this as 5 days 12 hours 0 min 0 sec.
    I understand that it sees the .5 as half a day - 12 hours.
    Is there a way to convert this so it shows as 5 days 4 hours.
    I have tried changing H6 to divide by 24 and have tried H6 to divide by 3.
    Is what I am asking possible.

    Regards
    Peter

  17. Hi all,

    could I possibly get some pointers on the below:

    i usually download a report with a time in and time out for our engineers on site.
    is there an easy way to calculate if they have been on site from 7:30 am to 5:30 pm to get a full shift.
    the shifts are based on a 10 hour work day.
    for example if they work 9h45m - they would get 0.97 of a shift.

    this would save me days of work! i'd appreciate any help!

    Many thanks!!

  18. Hello

    I would like to calculate the lateness

    Time in should be 830 = 8:30am ( I use =TIME(IF(LEN(A1)=2,0,LEFT(A1,LEN(A1)-2)),RIGHT(A1,2),0) , this formula provided by you )
    Actual in 903 = 9:03am
    How to prepare formula for lateness in minutes ? and show in minutes ?

    • Hi!
      Calculate the time using this formula in two cells and subtract time. Or subtract in one formula

      =TIME(IF(LEN(A2)=2,0,LEFT(A2,LEN(A2)-2)),RIGHT(A2,2),0) - TIME(IF(LEN(A1)=2,0,LEFT(A1,LEN(A1)-2)),RIGHT(A1,2),0)

  19. I have a spreadsheet that we use and the "time" is listed as a custom "time" using the format 00":"00, which would show 1:30 Pm as 13:30

    I need to convert that "time" to an actual time string for 24 hour clock using an excel formula but I cannot figure it out. Can you assist??

  20. hi,

    i tried using 'To convert the time to decimal, multiply it by 24' but it didn't work, is there another method ?

    thanks

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