Microsoft Project effectively records task durations in hours and the value of the duration in days is calculated using the parameter entered in the Hours per day: field in the File, Options, Schedule tab, Calendar options for this project: section.

It is VERY IMPORTANT that all users understand that the durations in days are calculated using ONLY the one parameter and this parameter is used with EVERY calendar. This makes Microsoft Project difficult to use when calendars with a different number of hours per day are being used.

Click on this link to see an article on how Microsoft Project calculates durations in days.

To see more explanations like this then please consider purchasing this Microsoft Project book by Paul Harris which is available in many formats, paperback, spiral, Kobo, Kindle and iTunes.

The book is intended to be used:

  • As a self-teach book and user guide, or a training manual for a two-day training course.
  • PowerPoint slide shows are available for training companies to purchase and pdf versions are available to educational organisations.

More information and links to book sellers visit this this web site: https://www.eh.com.au/MSP2019.html