What is an MPP file?

An MPP file is the native project-plan file format used by Microsoft Project. Project managers use it to store a schedule together with the information needed to understand and track the plan.

What does an MPP file contain?

Depending on the project, an MPP file can include task names, work breakdown structure levels, start and finish dates, durations, dependencies, milestones, completion percentages, calendars and resource assignments.

How do you open an MPP file?

Microsoft Project can open and edit MPP files. If you only need to inspect a plan, an online MPP viewer is often faster because it does not require a Project license or desktop installation.

Can an MPP file be opened on a Mac?

Microsoft Project does not have a native macOS desktop edition. A browser-based viewer lets Mac users inspect the project schedule without installing Windows or uploading it to a permanent project workspace.

View an MPP file online

FormatPeek displays the Gantt chart, task sheet, resource sheet, task usage, calendar and network diagram. Temporary uploads are deleted immediately after parsing.