Microsoft KB Archive/48261

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Duration Values Stored in Units of Minutes

PSS ID Number: Q48261 Article last modified on 03-15-1995

1.00 3.00 3.00a | 1.10 3.00


The information in this article applies to:
- Microsoft Project for Windows, versions 1.0, 3.0 - Microsoft Project for the Macintosh, version 1.1


Microsoft Project for Windows and Macintosh stores Duration values in units of minutes. All values entered are translated into some number of whole minutes.

NOTE: Later versions of Microsoft Project round correctly.


When entering Duration or Work values in minutes with any decimal places, the number is always rounded down to a whole number (i.e., decimal places are ignored).

For example, after entering .75m, 0m appears in the field.

When entering a Duration/Work value in hours to the hundredths place, sometimes the number is rounded down in the hundredths and sometimes it isn’t. Hours are fine out to the tenths position.

For example, after entering 1.67h, 1.66h appears in the field. After entering 1.66h, 1.65h appears in the field, but after entering 1.65h, 1.65h remains in the field.

Duration values in units of weeks will not be rounded.

KBCategory: kbother KBSubcategory:

Additional reference words: 1.0 1.00 1.1 1.10 3.0 3.00

Copyright Microsoft Corporation 1995.