Home
DGN
Convert to FlatGeobuf

Convert DGN to FlatGeobuf

Convert DGN (.dgn) to FlatGeobuf (.fgb) online for free. Fast, accurate geospatial format conversion with CRS reprojection.

Ready to convert?

Upload your DGN file and get FlatGeobuf output in seconds.

Convert Now

About DGN

DGN (Design) is a CAD file format used by Bentley MicroStation for 2D and 3D design data. It is common in civil engineering and infrastructure projects.

Extensions: .dgn

Software: MicroStation, QGIS, AutoCAD, GDAL/OGR, Global Mapper

Limitations: Limited to Point, LineString, and Polygon geometries. No custom attributes. Complex element types may not convert.

About FlatGeobuf

FlatGeobuf is a performant binary encoding for geographic data based on FlatBuffers. It supports streaming and random access for fast partial reads.

Extensions: .fgb

Software: QGIS, GDAL/OGR, Leaflet, OpenLayers, GeoServer

Limitations: Relatively new format with limited support in older software. Single layer per file.

How to Convert DGN to FlatGeobuf

Upload your DGN file (.dgn)
Review detected layers, features, and coordinate system
Select FlatGeobuf as your output format
Choose a target coordinate reference system (optional)
Click Convert and download your FlatGeobuf file

Frequently Asked Questions

How do I convert DGN to FlatGeobuf?

Upload your DGN file to ConvertGeoData, review the detected data, select FlatGeobuf as the output format, and click Convert. Your converted file will be ready to download in seconds.

Is the DGN to FlatGeobuf conversion free?

Yes! ConvertGeoData offers free conversions for all users. No account required for basic conversions. Sign up for a Pro or Business plan for higher limits.

Can I change the coordinate system during conversion?

Yes. ConvertGeoData automatically detects your source CRS and lets you reproject to any EPSG coordinate reference system during conversion.

What software can open FlatGeobuf files?

FlatGeobuf files can be opened with QGIS, GDAL/OGR, Leaflet, OpenLayers and more.