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Use the Format Painter to copy the formatting of A2 to B2 and adjust the date.ħ. Click OK to see A2 change to a format starting with “” and adjust the date.Ħ. Choose the Custom category and type “m/d/yyyy h:mm AM/PM.”ĥ. Right-click on A2 and select Format Cells.Ĥ. Enter the end time in cell B2 and hit Enter.ģ. Enter the start time in cell A2 and hit Enter.Ģ. Do it like this (format cells dialog box):ġ. If you need to subtract times whose difference is more than 24 hours, you need to work with dates besides times. But the formula you learned only applied to time differences of less than 24 hours. In the previous section, you learned how to calculate hours in Excel. Enter the formula =B2-A2 in cell C2 and hit Enter.Įxample format showing the hours and minutesĬheck out our detailed blog to find a list of time management strategies you can use right away! Date and time in Excel Enter the end time in cell B2 and hit Enterģ. Enter the start date and time in cell A2 and hit Enter. These are the steps to subtract times whose difference is less than 24 hours:ġ. And the difference between a start time and an end time is called “time difference” or “elapsed time.” Time values are the decimal number to which Excel applied a time format to make them look like times (i.e., the hours, minutes, and seconds).īecause Excel times are numbers, you can add and subtract them. Time Difference in Excelīefore we teach you how to calculate time in Excel, you must understand what time values are in the first place. Let’s go through a few formulas for time calculations in Excel so you get down to the exact hours, minutes, and seconds in your custom time format. Subtract times whose difference is more than 24 hours: When you need to know the hours that have gone by since your project started.