TIME conversions in Microsoft Excel.


Performing TIME calculations in Microsoft Excel

          We’ve covered a lot of ground with posts on date calculations in Excel: using the DATEDIF function, calculations without the DATEDIF function , and in the most recent post – business day calculations with the NETWORKDAYS funtion. Now it’s turn to perform some TIME conversions and calculations in Excel. We will use TIME, TIMEVALUE, NOW, HOUR, MINUTE, SECOND, TEXT, and MOD functions to perform various time operations…

          NOW function displays the current date and time. Depending on your cell formatting, it might be date only, or if your cell format is General, it could even be serial number equivalent of your current date and time. While this function has no arguments, its syntax still calls for a set of parenthesis: =NOW(). We already know that Excel uses the whole value of 1, in reference to the “beginning of time”, as far as Microsoft is concerned – January 1, 1900. Similarly, today’s date has the value of 42,124 The decimal point value references the fractional time portion of any date. As an example, 0.5 denotes NOON, while 0.75 refers to 6 PM. [0.75*24 = 18] Similarly, one minute, is 1/60th of an hour or 1/1440th of a day, calculating to be 0.069(4). Keep in mind that, whenever date/time value starts with a 0, the date portion has no value, and we are working with the time value only.

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Performing business days calculations in Excel, with NETWORKDAYS function.


Calculate number of whole days between two dates, - NETWORKDAYS function

          We already did some date calculations with a DATEDIF function, as well as without one . However, the limitation of both methods was the fact that they focused on calendar day calculations; in this post, we will perform business day calculations. To accomplish this task, we will need to use NETWORKDAYS, and possibly NETWORKDAYS.INTL functions.

          Following our tradition, let’s turn to Microsoft’s own documentation to introduce the NETWORKDAYS function: “Returns the number of whole workdays between two dates using parameters to indicate which and how many days are weekend days. Weekend days and any days that are specified as holidays are not considered as workdays.”

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