Add Minutes to Time in Google Sheets
Adding whole hours or decimal minutes to a given time in google sheets is a fairly simple process. You can do this by using the Start_time+TIME(0,minutes,0) and Start_time+minutes/1440 functions. In this add minutes to time guide, we will show you how to do this.
Adding whole Minutes
If you want to add whole minutes to a given time, you can use the following formula:
=Start_time+TIME(0, minutes,0)
 Start_time: the time that you want to add minutes to
 Minutes: the minutes that you wish to add
This function returns a time formatted string.
Cell C2 shows the number of minutes you want to add, while Cell D2 displays a formula that will calculate how many more cells need changing.
=B2+TIME(0,C2,0)
Or
=B4+C4/1440
To see the result, press Enter key.
Explanation
The TIME function is a great way to convert decimal numbers into an appropriate time format. Here, we change the number of minutes from 50 (which converts it into PM) and then add:00 before adding another set amount for minutesin, in this case, 0 because there aren’t any other digits available on our keyboard!
Note: To subtract the minutes from a time period, you need to use this formula.
= MOD(Start_timeTIME(0, minutes,0),1)
For Instance, Cell B2 shows time, and cell C2 shows the number of minutes you want to subtract. If you want to subtract a number of minutes, use the below formula:
=MOD(B2TIME(0,C2,0),1)
To see the result, hit Enter key.
The MOD (modulus) function is an important tool for financial professionals. It can be used to flip negative numbers into positive ones yield accurate results in most cases!
Add decimal Minutes to time
Generic formula:
=Start_time+ minutes /1440
 Start_time: the time that you wish to add minutes to.
 minutes: the minutes that you wish to add to start_time.
The value should be returned in time format.
For instance, cell B2 contains the time value, and cell C2 displays the number of minutes you want to add. Please see the below formula for this purpose.
=B2+C2/1440
To see the result hit Enter key.
24 hours in a day, and one minutes is 1/1440th of the whole duration.
Note: Subtracting the minutes from time is easy with this formula.
=MOD(Start_time minutes /1440,1)
The number of minutes you want to subtract is displayed in cell C2, and time is displayed in B2. To find the correct formula, please use this simple equation:
=MOD(B2C2/1440,1)
To see the result hit Enter key.
When google sheets detects negative values in a cell, it converts them to positive with the MOD function. This means you can just flip your negatives around and get an accurate time reflecting how long something takes!
Related Functions

Google Sheets TIME function
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Google Sheets MOD function
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