Project for the web limits and boundaries

Microsoft Project for the web will soon become Microsoft Planner, which is currently rolling out to customers. To learn more about setting up the new Planner for your organization, see Microsoft Planner for admins.

There are important limitations that you should know if you are using Project for the web. These limits apply to projects and tasks.

Project limitations

Field Limit
Maximum total tasks for a project 1000
Maximum total duration for a project 3650 days (10 years)
Maximum total resources for a project 300
Maximum total links (successor only) for a project 600
Maximum total custom fields for a project 10

Task limitations

Field Limit
Maximum hierarchy level 10 levels
Maximum links (successor + predecessor) 20
Maximum duration of leaf task 1250 days
Maximum duration of a summary task 3650 days (10 years)
Maximum resources assigned to a task 20 resources
Supported date range for a task 1/1/2000 - 12/31/2149