ERLANDSEN DATA CONSULTING Excel & VBA Tips   Informasjon på norsk / Information in Norwegian

These pages are no longer updated and are only available for archive purposes.

Click here to visit the pages with updated information.

Negative times

If you calculate with time values, you will soon discover that Excel is not fond of negative time values. You can bypass this limitation by using the option 1904 date system. You find this setting by using the menu item Tools, Options..., Calculation. Select this option before you enter any dates or time values in your workbook, if not you'll have to edit all the existing date- and time values.
If you want to enter a negative time value you have to do it like this: -"10:15"
Or like this: = -10.25/24

If you prefer not to use the option 1904 date system in your workbook, you can use the IF-function to separate the positive and negative time values. This gives you the opportunity to have one column for the positive time values and another column for the negative time values.


Document last updated 2000-02-04 12:45:22      Printerfriendly version


Erlandsen Data Consulting   
Excel & VBA Tips   Copyright ©1999-2018    Ole P. Erlandsen   All rights reserved
E-mail Contact Address