How to calculate time difference with milliseconds in Excel?

To calculate the time difference is the normal job in our daily Excel routine. However, in this article, I am going to talk about calculating time difference with milliseconds in Excel.

Time difference with milliseconds


Time difference with milliseconds

Using the general formula =B2-A2 will get an error result while the value in B2 is smaller than A2, here I introduce a formula to handle this.

Select a cell that you will place the result in, type this formula =B2-A2+(A2>B2), press Enter key, and drag autofill handle over the cells needed this formula. See screenshot:
doc time difference with milliseconds 1

Tip: If you want to convert general time format to millisecond format, right click at the time cells and select Format Cells to enable the Format Cells dialog, select Custom in the Category list under Number tab, and type this hh:mm:ss.000 into the text box. See screenshot:
doc time difference with milliseconds 2


Easily add days/years/month/hours/minutes/seconds to a datetime in Excel

Supposing you have a date time format data in a cell, and now you need to add a number of days, years, months, hours, minutes, or seconds to this date. Normally, using formula is the first method for all Excel users, but it’s hard to remember all formulas. With Kutools for Excel’s Date & Time Helper utility, you can easily add days, years, months, or hours, minutes or seconds to a date time, moreover, you can caculate the date difference, or the age based on a given birthday without remembering the formula at all. Click for full-featured free trial in 30 days!
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Kutools for Excel: with more than 300 handy Excel add-ins, free to try with no limitation in 30 days.

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