*The article shows a few tips to calculate and display times that are greater than 24 hours, 60 minutes, 60 seconds.*

When subtracting or adding time in Excel, you may sometimes want to display the results as the total number of hours, minutes or seconds. The task is a lot easier than it may sound, and you will know the solution in a moment.

To show a time interval of more than 24 hours, 60 minutes, or 60 seconds, apply a custom time format where a corresponding time unit code is enclosed in square brackets, like [h], [m], or [s]. The detailed steps follow below:

- Select the cell(s) you want to format.
- Right click the selected cells and then click
*Format Cells*, or press Ctrl + 1. This will open the**Format Cells**dialog box. - On the
*Number*tab, under*Category*, select**Custom**, and type one of the following time formats in the*Type*box:- Over 24 hours: [h]:mm:ss or [h]:mm
- Over 60 minutes: [m]:ss
- Over 60 seconds: [s]

The following screenshot shows the "over 24 hours" custom time format in action:

Below are a few other custom formats that can be used to display time intervals exceeding the length of the standard time units.

Description |
Format code |

Total hours | [h] |

Hours & minutes | [h]:mm |

Hours, minutes, seconds | [h]:mm:ss |

Total minutes | [m] |

Minutes & seconds | [m]:ss |

Total seconds | [s] |

Applied to our sample data (Total time 50:40 in the screenshot above), these custom time formats will produce the following results:

A | B | C | |
---|---|---|---|

1 | Description |
Displayed time |
Format |

2 | Hours | 50 | [h] |

3 | Hours & minutes | 50:40 | [h]:mm |

4 | Hours, minutes, seconds | 50:40:30 | [h]:mm:ss |

5 | Minutes | 3040 | [m] |

6 | Minutes & seconds | 3040:30 | [m]:ss |

7 | Seconds | 182430 | [s] |

To make the displayed times more meaningful to your users, you can supplement the time unites with the corresponding words, for example:

A | B | C | |
---|---|---|---|

1 | Description |
Displayed time |
Format |

2 | Hours & minutes | 50 hours and 40 minutes | [h] "hours and" mm "minutes" |

3 | Hours, minutes, seconds | 50 h. 40 m. 30 s. | [h] "h." mm "m." ss "s." |

4 | Minutes | 3040 minutes | [m] "minutes" |

5 | Minutes & seconds | 3040 minutes and 30 seconds | [m] "minutes and" ss "seconds" |

6 | Seconds | 182430 seconds | [s] "seconds" |

Now that you know the general technique to display times greater than 24 hours in Excel, let me show you a couple more formulas suited for specific situations.

To calculate the difference between two times in a specific time unit, use one of the following formulas.

To calculate hours between the start time and end time as a **decimal number**, use this formula:

(*End time* - *Start time*) * 24

To get the number of **complete hours**, utilize the INT function to round the decimal down to the nearest integer:

`=INT((B2-A2) * 24)`

To calculate minutes between two times, subtract the start time from the end time, and then multiply the difference by 1440, which is the number of minutes in one day (24 hours*60 minutes).

(*End time* - *Start time*) * 1440

To get the number of seconds between two times, multiply the time difference by 86400, which is the number of seconds in one day (24 hours*60 minutes*60 seconds).

(*End time* - *Start time*) * 86400

Assuming the start time in A3 and end time in B3, the formulas go as follows:

Hours as a decimal number: `=(B3-A3)*24`

Complete hours: `=INT((B3-A3)*24)`

Minutes: `=(B3-A3)*1440`

Seconds: `=(B3-A3)*86400`

The following screenshot shows the results:

- For correct results, the formula cells should be formatted as
**General**. - If the end time is greater than the start time, the time difference is displayed as a negative number, like in row 5 in the screenshot above.

To add a desired time interval to a given time, divide the number of hours, minutes, or seconds you want to add by the number of the corresponding unit in a day (24 hours, 1440 minutes, or 86400 seconds), and then add the quotient to the start time.

Where N is the number of hours, minutes, or seconds you want to add.

Here're a few real-life formula examples:

To add 45 hours to the start time in cell A2:

`=A2+(45/24)`

To add 100 minutes to the start time in A2:

`=A2+(100/1440)`

To add 200 seconds to the start time in A2:

`=A2+(200/86400)`

Or, you can input the times to add in separate cells and reference those cells in your formulas like shown in the screenshot below:

To **subtract times** in Excel, use similar formulas but with the minus sign instead of plus:

The following screenshot shows the results:

- If a calculated time displays as a decimal number, apply a custom date/time format to the formula cells.
- If after applying custom formatting a cell displays #####, most likely the cell is not wide enough to display the date time value. To fix this, expand the column width either by double-clicking or dragging the right boundary of the column.

This is how you can display, add and subtract lengthy time intervals in Excel. I thank you for reading and hope to see you on our blog next week!

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## 53 Responses to "How to add & subtract time in Excel to show over 24 hours, 60 minutes, 60 seconds"

I believe you have an error in the section "How to add / subtract more than 24 hours, 60 minutes, 60 seconds".

"Here're a few real-life formula examples:

To add 45 hours to the start time in cell A2:

=A2+(30/24)"

the formula should be =A2 + (45/24)

the other info was helpful

Thanks, Larry! Corrected.

It worked!

Thanks, Svetlana.

Hi Svetlana, This is very useful and very informative. I have some doubt if have time 12:30 and i apply formula as A2+(2/25) then it decreases the time by 5 Minutes and gives 14:25 time and if apply A2+(2/23) then it increases the time by 5 Minutes and gives 14:35. Could please give me clarity on this how does it calculate?

Thanks, Svetlana again!!

Hi Rohan,

I don't know the reasoning behind your calculations, but the results are correct. As you probably know, in internal Excel system, times are stored as decimal fractions, e.g. 00:00:00 is stored as 0.0 and 23:59:59 is stored as 0.99999. So, in terms of times, 2/25 (0.08) is 1:55, when added to 12:30, it gives you 14:25.

For more information, please see Excel time format.

Thanks Svetlana

Hi there!

How should i add running clock in excel?

Hi, Indra,

most likely you need a VBA code. Please take a look at these topics, they may help:

1) Running clock VBA from stackoverflow

2) Mr.Excel running clock

Thank you so very much. Much appreciated

how to without mention date calculation hours check for example 23:00PM -05:30 =06:30

Hi, I need to take a monthly decimal total number of hours worked (i.e. 160.833333) and display as "X hours and Y minutes" which should be 160 hours and 50 minutes, where 49.998 minutes is rounded to the nearest whole minute. I am tearing my hair out.

thanks.

I need to subtract for ex,

10:10 hours from 24 hours,

what formula should i need to use,

Warm regards,

Thyagaraj V

suppose I need to add another 30mins to 17.40 hrs. The answer should be 18.10 hrs. Can help me to create a fomula

I am compiling a running total of generator running time. I have start and end times in Columns B & C, with format: mm/dd/yy hh:mm. I subtract C from B with formula:

=INT($C4-$B4)&" : "&HOUR(MOD($C4-$B4,1))&" : "&MINUTE(MOD($C4-$B4,1))

Results go into Col. D with results formatted as dd: hh: mm. So far so good, but then I add the individual running times to get cumulative running times in Col. E, and even this works until I get to where the hours exceed 24. They don't add to the days. Example:

2: 23: 43 (d: hh: mm) plus 30 minutes displays as 2: 24: 13 but it should be 3: 0: 13. What do I do to get the correct display?

Thanks,

Craig

Say my start time is 18:00 hours today and my end time will be 12:00 hours next day. Then how to I calculate the total hours duration (hh:mm format) and also how to get it in decimal format for other calculations (may be y*24).

Many thanks for your kind help.

I got my answer i.e. 24+(24*(endtime-starttime) = no. of hours difference. I hope I am right in this.

Thanks

I'm calculating staff OT for 5PM onward and just wanna show 30minute and above in the cell. Which function can be useful?

If end time is 8:30 PM, i wanna see in the cell is 3:30 as OT and If the end if only 8:15PM. I wanna see in the cell is 3:00 a OT

Sir,

I want to add 1 hour 30 minutes + 2 hour 50 min in XL sheet.please help me by the formula.

When I was doing the formula to add how many hours working in hours:minutes, for example 1.17 one day and next day 0.59 total should be showing 2.26 but formula is showing 1.76. How to make a formula if anything over 60 minutes should become a hour?

plz solve this problem.

how to calculate 24hours working format....

the labours check in 10-09-2018 5:44AM and they check out next morning 11-09-2018 4:58AM....

BREAK HOUR 2:30Hr

NORMAL WORKING HOUR 08:00Hr....

Thank you. I figured out how to sum times in Excel, and I've almost figured out how to merge them into a Word document. I say "almost" because Word doesn't seem to be able to handle summed times greater than 24 hours (I'm summing total hours worked).

I've tried every "switch" I can think of, and once the hours:minutes (32:12) goes beyond 24 hours, it will not longer display properly. Is it possible to merge such information to Word and have them display as they display in Excel? (I've not tried using a DDE link because it seems that Microsoft is moving away from this so I didn't want to get attached to something that will be phased out).

This isn't working for me. When the total hits 24 hours it starts over; adding time that totals 28:30 shows a total of 4:30.

I am certain both the cells I am adding and the cell I am putting the total in are formatted as custom h:mm.

I am using Excel on an Office 365 subscription; Excel for Mac, version 15.32.

Do you have any further guidance?

Hi Josh,

To get an "over 24 hours" custom format, you should enclose the hour code in square brackets. So, the total cell should be formatted [h]:mm

Hi Svetlana, can you give an exemple please? thanks

Svetlana,

i got it, thanks

if value of a1 is 2 and value of p1 is 15how to fine vale of b1 c1 d1 e1

I am trying to subtract talk time from one year over the next to see if there was a reduction or increase. It works fine if the time decreases but if there is an increase I get the below. 15:01-17:32

give me ######## How do I get it to subtract and give me a negative result

if i create 1st date column 2nd, 3rd time column and 4th column again date. if we add 2nd and 3rd column times and get less than 24hrs then 4th column should reflect same date as of 1st column if it is more than 24hrs then 4th column date should be one more tha 1st column. please suggest any formula

thanks in advanvce.

I searched all over youtube for a formula to show lapsed time from start time and couldn't find the answer. I knew there must be some simple formula, and you had it. Great directions, down to the important details. Many thanks, I took a couple hours trying to find the answer and in five minutes you showed me how. THANK YOU Svetlana for your help. Excel angel!

Hi, i have a questions,

Start date 31/1/2019 10:00:00am and End Date 01/02/2019 11:00:00am

i tried to minus =End date-Start date, but it shows me #value! anyway to solve this?

The cell i need it formula to be [h]:mm:ss

I am trying to figure out how to add a remainder of time to a total.

Example: time in 8:00 am, time out 5:00 pm = total time 9:00 hours. Allowed 0:30 minute paid break but went over (0:47). How do I add the 0:17 minutes to the total time if allowed time goes over 0,30,0

Thank you

how to calculate total running hours

ex:

last month running Hrs. xxxx (format cell - [H]:mm)

but if I enter more then 4 digit total running Hrs. cell show #VALUE!

Last Month R/HRS 1358:06

TOTAL R/HRS 1358:06

TOTAL ACCUMULATED RUNNING HRS 1358:06 [=SUM(B31+B32)]

But if enter 5 digit show #VALUE!

Last Month R/HRS 13580:06

TOTAL R/HRS 13580:06

TOTAL ACCUMULATED RUNNING HRS #VALUE! [=SUM(B31+B32)]

Please help me to resoles this error

Hi,

I have this two time duration in text format(HH:MM:SS). I am trying to add both and find the total time duration of the activity. However the values are not reflecting correctly. It is showing as 0:00 only.

01:40:00

00:05:00

Can anyone please me in understanding the issue.

Hi,

I am trying to get the difference of the total breaks that my agent is taking. Can anyone tell me here the exact formula in google sheets for this pleaseee 60 minutes minus 00:55:00+00:15:23+00:24:56.

Hi Romel,

if I get it correctly, I believe you can enter these values to your cells (for example, 00:60:00 to A1; 00:55:00 to A2; and so on), apply Duration format to them, and create a simple formula like this: =(A2+A3+A4)-A1

Then set Duration format to the resulting cell as well and you'll see a difference of 00:35:19.

Im really confused because this all seems like it should be easy but I just dont get the correct result.

Example: Start time is 08:40 (A1)

Current time is 10:45 (B1)

Time difference 02:05 (C1)

in D1 I have =C1*1440 but the result is 62,860,445

and I know thats not how many minutes are between 8:40 and 10:45

My Current time cell uses =NOW(), could that be the issue?

Many thanks

Hi,

I am trying to get a series of value for a column with datetime datatype showing seconds over 60 seconds. For Instance, take the example as "23-06-2019 14:30:59". When I am trying to use the custom format as "dd-mm-yyyy hh:mm:[s]" then it is giving error and throwing some decimal number for "23-06-2019 14:30:60" or "23-06-2019 14:30:61". Can anyone please help me out to get the correct logic for the same

Thanks!

Hi, I am trying to produce an hourly blood pressure chart in Excel. How do I enter and how do I display the hourly entry of each observation please?

I got it

Hi, i need help please. I have data that auto loads daily at 5pm. The process is broken into 2 parts (ETL1 and ETL2). ETL1 starts at 5pm till 11pm and ETL2 starts at 11 till 4 am. at 7 am i run a script to check if everything ran. each row has a start and end date time. i would like to flag all data after 5pm yesterday as todays data. Currently when i filter on today, i only see the rows where the date is after 00:00

Hi, I had a similar problem working with time. For 24 hours Excel stores this as 1 day, 0 hours. My solution was to convert everything to seconds and work from there. If you have formatted as days, multiply by 86400 (seconds in a day), if you have formatted as hours, multiply by 3600 (seconds) in an hour, etc.

I have a question, If I have 01:40am and i want to minus 20:55:00pm what is the correct formula I need in order for it to see I have gone into the next day? I have tried and it will give me a -19... I need it to see that it is a 24hr period

this is a time related query.

when i do 23:59 - 23:30, i get an answer as 29 minutes formula=(b1-a1)*1440

when i do 00:15 - 23:59, i get a negative with same formula, this is the problem.

solution required = how do i get the number of minutes? which should be 16 minutes.

Look forward to getting a solution, thanking everyone for their inputs!

:)

When I use custom format to represent times greater than 24 hours, the [h]:mm:ss displays 575:00:00.

Why the addition of 551 hours to the total?

Because the [h]:mm actually requires that you convert the total hours to DAYS.fraction. So take (calculated hours)/24. to display with [h]:mm format

I am trying to show my kid when he improves in his swimming times. It is all good when he improves. Formula works great. But, if he did not improve the formula does not work. For example: last month it took him 00:36.55 (milliseconds) to swim 50 yards. This month it took him 00:35.70. So, he improved 00:00.85.

But, if the numbers are opposite and he did worse the formula will not give me the negative number I am looking for. 00:35.70 - 00:36.85 = -00:00.85

All cells are formatted mm:ss.00;@

Is there a way to show a negative number in time when deducting?

Hi I am trying to create a time sheet that displays elasped time between start time and end time. I have times that cross over 24 hours, where the end time is smaller than the start time. I have been using =mod(end time - start time,1). However this does not work when subtracting a smaller end time from a start time on another date. Is there one formula that I could use for all types of subtraction of time that would also capture the smaller end time - larger start time crossing over 24 hours?

I have 4 machines, which run for few hours in a shift,I note down the number of hours of breakdown/ idle time (In hours) for each machine individually. At the end i want to calculate run time of "all the machines combined" by subtracting the " SUM of idle times of all machines" from 32 hours.

Please suggest a suitable formula/ technique for the same

Very useful and helpful explanation and information.TQ

I need to subtract dates and time where the numerator is MM/DD/YY HH:MM (military time, cell = O8) is in one cell and the denominator is in two separate cells one for date (cell = A8) the other for time (cell = W8).

Thnaks so much

After Computing the formula i got Month 1 Total Extra Hours Worked A1= 17 hours, and computing month 2 total Extra hours Worked A2 = -5 Hours. Now please tell me the formula for getting 17 hrs (-) -5 hrs. How to get 12 hrs as answer.