![]() NOTE: Use Calendar format 1904 if you need toĭisplay negative results Tools/Options/Calculation and check the 1904ĭate System checkbox. To subtract 3 hours from the time in a cell, use this formula: =B2 - 3/24 Shot in question " How do I sum the time data." below.) How do I subtract time?įor 2 cells with times, just subtract, like =B1-A1. :mm in the result cell to prevent rollover at 24 hours (see the screen To add 8 hours to the time in a cell, use this formula: =B2 + 8/24 I need to calculate 0:45 minutes at 120įor 2 cells with times, just add together like any number (=A1+A2+A3).How do I sum the time data in the format:.Let’s say we have the End Time in C5 and Start Time in B5.Excel Date and Time Resources Excel Time Calculations This property of MOD function can be used to solve the negative problem while calculating Time difference.įormula using the MOD function to calculate Time difference =MOD(End Time - Start Time,1) The MOD Function in Excel can be used to find the remainder after division between two numbers. When the condition is evaluated as FALSE, function will return the third argument, -0.59375+1 = -0.59375+1 = 0.40625 = 9:45Ġ.40625 is equivalent to 9 hours 45 minutes. So, the first argument of the IF function is evaluated to FALSE. We have 10:45 PM (Start Time) in B5 and 8:30 AM (End Time) in C5. Let’s say we have the End Time in C5 and Start Time in B5, the formula becomes, =IF(C5>B5,C5-B5,C5-B5+1) Explanation of the formula Means, if the End Time is greater than Start Time, Start Time is subtracted from End Time and the result is returned. =IF(End Time > Start Time, End Time - Start Time, End Time - Start Time + 1) Here, we will use the IF function to check whether the End Time is greater than Start Time or not. So, while calculating Time difference and if negative time is expected as result, use any of the following formulas. Whenever, the In Time is greater than Out Time, the above formulas will result in negative time and will display a series of # sign. The formulas explained above will work when the Out Time is greater than In Time. To calculate Time difference in Decimal Hours, use the following formula and apply Number Format to the corresponding cell. In that case you should use the following method. In the Number tab of the Format Cells dialog > click on Custom under Category and select the following format :mmĬlick OK and we have the Time difference in Proper format.Īnd if you want the Total of these Time differences, use SUM function.īut there can be times you need the Time difference in decimal hours. Select the cells containing formulas > Right-click > Format Cells… To remove the A.M from the result we have to apply proper Time Format to the corresponding cells. ![]() ![]() Along with the arithmetic operation, Excel has copied the Number Formatting from the adjacent cell and that is why the cell is displaying 9:30 A.M instead of 9.30. ![]() When 8:00 AM was subtracted from 5:30 PM, Excel returned 9:30.Īctually, there is nothing wrong with the calculation. But here is what Excel returns when I subtract In Time from Out Time. We can simply subtract In Time from Out Time. Simple Subtraction for calculating Time difference
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