Free online DXF to GEOJSON converter

GIS applications and web maps often require GeoJSON when a drawing arrives as a DXF file. Converting it makes CAD geometry usable as geographic features, provided its coordinate system is known.

What the DXF format is

DXF (Drawing Exchange Format) stores CAD drawing data, including lines, arcs, points, text, and other entities organized on layers. AutoCAD, BricsCAD, LibreCAD, and other CAD programs create or edit DXF files, which are commonly used to exchange technical drawings.

What the GEOJSON format is

GeoJSON is a JSON-based format for geographic features: points, lines, polygons, and their associated properties. GIS software and web-mapping tools can read it directly. Unlike DXF, it is designed for geographic data rather than detailed CAD drafting, so drawing styles and some CAD-specific entities may not carry over.

How to convert DXF to GEOJSON

Online on 101convert.com

1. Upload the DXF file to the converter. You can add several files for batch conversion; the page shows the per-file size limit.
2. Before converting, set the drawing’s coordinate system using its EPSG code.
3. Convert the files, then download the GeoJSON output.

Offline with desktop software

GDAL is a free, open-source command-line toolkit available for Windows, macOS, and Linux. Its DXF reader and GeoJSON writer can convert a drawing with:

ogr2ogr -f GeoJSON output.geojson input.dxf

If the drawing’s coordinates are in a known source CRS and need to be converted to GeoJSON’s usual longitude/latitude CRS, specify both CRSs:

ogr2ogr -f GeoJSON -s_srs EPSG:26910 -t_srs EPSG:4326 output.geojson input.dxf

Replace EPSG:26910 with the CRS that actually describes the DXF coordinates. The example target, EPSG:4326, uses longitude and latitude.

QGIS is free, open-source desktop GIS software for Windows, macOS, and Linux. Open the DXF using Layer → Add Layer → Add Vector Layer, select the relevant imported layer, then use Export → Save Features As… and choose GeoJSON as the format. Set the destination CRS in the export dialog if reprojection is needed.

Coordinate systems and conversion limits

Many DXF drawings contain coordinates but no reliable CRS information. Assigning the wrong CRS or treating local drawing coordinates as longitude and latitude can place features incorrectly; identify the drawing’s CRS before reprojection. CAD entities such as annotations, dimensions, blocks, and styling may be omitted, simplified, or represented differently in GeoJSON, so check the exported features in the intended GIS or mapping application.