Creating Square Buffer in QGIS?

Question

I have a rectangular polygon I want to create another polygon that is 200 metres bigger in each direction from the original.

Is there a way to create a square buffer around the original polygon or another method to do this?

score 16 · Accepted Answer · answered Mar 27 '18 at 15:47

16

Use the "Miter" Join style.

Result:

answered Mar 27 '18 at 15:47

HeikkiVesanto

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For extra info : this is only available for QGIS 3.X. There's no options as this one in the buffer tool of QGIS 2.18. – gisnside Feb 08 '19 at 13:39

score 5 · Answer 2 · answered Sep 30 '22 at 10:14

I recently wanted to do the same thing as the OP, but rather than irregular-shaped buffers of irregular polygons, I wanted actual squares. Here is an approach I used in QGIS 3.16, I hope it might be useful for others:

Create polygon centroids
Buffer centroid points by desired distance.
Use the 'Bounding boxes' tool in the Processing tool box

Creating Square Buffer in QGIS?

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