Convert TopoJSON to DXF

Turn TopoJSON data into AutoCAD DXF — free, instant, and entirely in your browser, with optional reprojection to any of 200+ coordinate systems.

No upload. No account. Your data stays on your machine.

Drop your files here or click to browse.

Shapefile (all parts or .zip), GeoJSON, KML/KMZ, GPKG, GPX, DXF, CSV, TAB and more — files never leave your browser.

Output format

Output coordinate system (optional)

Source CRS override (for CAD/CSV without one)

About TopoJSON (TopoJSON)

GeoJSON's topology-preserving sibling — shared boundaries stored once, much smaller files.

Worth knowing: Read-only here: we convert from TopoJSON, not to it.

The CAD interchange format. CAD drawings carry no coordinate system — tell us the CRS the drawing was set out in and we handle the rest.

Worth knowing: No CRS metadata; attributes limited to layer/linetype/colour; 3D vertices supported.

Drop your TopoJSON file above.
We read it locally with GDAL compiled to WebAssembly — nothing is uploaded.
Optionally pick an output coordinate system; official datum grids are applied automatically.
Download your DXF result, with a transformation report showing exactly what was done.