DGN (Microstation) to GeoJSON Sequences

Convert DGN (Microstation) files to GeoJSON Sequences format

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About DGN (Microstation)

DGN (MicroStation Design) is Bentley MicroStation's native CAD format, widely used in infrastructure, civil engineering, and transportation projects. Like DXF, it stores geometric entities in a coordinate space without an embedded CRS and must be geo-referenced after conversion to be used in a GIS.

You might convert from DGN when you need to bring infrastructure or civil engineering geometry into a GIS, when collaborating with a team that works in GIS rather than CAD, or when you want to publish linework from a MicroStation project on a web map.

Frequently asked questions

Does DGN include coordinate reference system information?

No — like DXF, DGN files store coordinates in an internal drawing unit space without CRS metadata. Use the Assign CRS tool after conversion if you know the intended reference system.

Which DGN geometry types are converted?

Lines, arcs, shapes, and complex chains are converted to their closest GIS equivalents. MicroStation tags and graphic attributes are generally not preserved in the output.

What is the difference between DGN V7 and DGN V8?

DGN V7 is the older format supported by legacy MicroStation versions. DGN V8 is the current format and uses a compound document structure. GDAL supports both versions.