File Type ArcGIS Map Document IconArcGIS Map Document
File Format Proprietary (ESRI)
Usage Open manually
Popularity ★ ★ ★ ★ ☆  Common

Map file format used by ESRI mapping software, such as ArcMap; saved in a compound format that includes the map description, layout, and embedded objects saved in the map; organized into units called storages and streams.

Important: MXD map files may grow in size after being saved multiple times because they can become fragmented. Saving a fragmented map document as a new document may reduce its file size.

Open With

IconESRI ArcGIS for Desktop

Updated 2007
Information from the PC File Extensions Reference