The following specifications are supported for Project, although actual limits and performance speed depend on your computer's configuration.
Note Out-of-memory errors may occur before you reach the listed limits.
Attribute
Maximum
Resources per project
700,000
Resource units per assignment
60,000,000 units or 6,000,000,000%
Resource availability dates
100
Tasks per project
400,000
Task dependencies per project
No limit
Predecessors per task
50,000
Successors per task
50,000
Outline levels per project
65,535
Consolidated projects
998
Open project files per consolidated project
998
Sharer files connected to a single resource pool
997
(That is, the maximum number of open project files, minus 1 for the resource pool itself.)
Open windows
50
Base calendars
Tested to 30,000+
Calendar exceptions per calendar
Testing was able to add more than 15,000 exceptions to a base calendar.
Rate tables to support varying pay scales and rates
5 per resource
Variable rates per rate table to support rate increases and decreases
25
Cost value in a currency field
999,999,999,999.99
Work value
1,666,666,666 hours
Assignment work values for work assignments
999,999,999 hours
Assignment work values for variable material assignments
999,999,999 units
Assignment work values for fixed material assignments
60,000,000 units
Custom cell formats
64,000
Print scaling adjustment range percentage
10%-500%
Page header text
5 lines
Page footer text
3 lines
Page legend text
3 lines
Page legend text box width
5 inches (12.7 centimeters)
Filter tests per filter
40
Filter tests per AutoFilter
2 per column
Earliest date allowed for calculation
January 1, 1984
Latest date allowed for calculation
December 31, 2149
(In Project 2010, the last date allowed for calculation is December 31, 2049.)
Discontinuous selections in a sheet view
10
Baselines
11
Characters in a text field
255
Characters in an outline code field
255
Values and characters in an Enterprise Resource Multi-Value (ERMV) field
255 values, each of 255 characters
Value in a number field
9,999,999,999,999.99
Install Project - Microsoft Support
Before installing Project the first time, sign in with an existing or new Microsoft Account and enter your product key* at microsoft365.com/setup. Redeeming your key links your account …
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Use a powerful, yet simple project management tool to plan, manage, and deliver work effortlessly—from one-time projects to large initiatives.
Get started with Project Online - ProjectOnline | Microsoft Learn
Project Online is web-based and great for: Managing multiple projects; Tracking work on timesheets; Balancing broad resource needs (If you're looking for a hosted version of Project …
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