I'm looking to merge all internal polygons in a gridded shapefile to one solid polygon shapefile while retaining the external shape.

Shapefile image for visualization

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    – underdark
    May 23, 2018 at 17:09

2 Answers 2


You can probably just start an edit session, select all (drag a box), and choose the Merge Selected Features button.

Merge Selected

Merged polygons

  • Merge Selected Features button shows grey?? Jun 19, 2019 at 1:19

Togle edit the layer you would like to merge, select all features then merge as shown on the previous answer, NB: activate the advanced digitizing toolbar in your menu bar.

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