Convert Shapefile to DXF Online — Free GIS Converter

Shapefiles are the standard output for GIS analysis and government data portals, but engineering and surveying firms work in CAD environments that require DXF — convert your Shapefile .zip to .dxf for immediate use in AutoCAD, Civil 3D, or MicroStation with geodata.plus.

Why convert Shapefile to DXF?

The GIS-to-CAD handoff is one of the most common cross-discipline data workflows in infrastructure, land development, and surveying. GIS analysts maintain authoritative datasets — parcel boundaries, topographic contours, utility networks, zoning polygons, road centerlines — in Shapefile format. Civil engineers and surveyors need that same geometry in AutoCAD or Civil 3D to use as a base layer for site design, grading plans, or as-built surveys. DXF is the standard interchange format that bridges these two worlds.

Without a conversion tool, this handoff typically requires QGIS or ArcGIS on the GIS side, manual layer-by-layer export, and often significant cleanup in CAD after import. Converting directly from Shapefile to DXF streamlines the process.

Why use geodata.plus

• Free tier — convert up to 3 files per month at no cost, no credit card required
• Automatic CRS detection — reads the .prj file from your Shapefile; you can reproject to a local engineering CRS before download so coordinates are in meters or feet
• Optional reprojection — reproject to any EPSG code, including state plane, UTM, or national grid projections that CAD workflows require
• Browser-based — no AutoCAD, QGIS, or GDAL install needed; works on any modern browser
• Encrypted transfer — all uploads use TLS; files are stored temporarily in Cloudflare R2 and automatically deleted on schedule
• Auto-deleted output — output files are automatically deleted after 2 days (free tier) and 7 days (Pro); no manual cleanup needed

How it works

1. Upload your Shapefile as a .zip archive containing the .shp, .shx, .dbf, and .prj files
2. geodata.plus detects the format and reads the CRS from the .prj file
3. Select DXF as the output format; choose a projected EPSG code to ensure CAD-friendly metric or foot-based coordinates
4. Download your .dxf file, ready to open in AutoCAD, Civil 3D, MicroStation, or BricsCAD

Shapefile format

Shapefile stores vector geometry with a paired attribute table. It is the most common format in government GIS, land registry systems, and federal agency data portals. Shapefiles distributed by these sources are frequently in geographic CRS (latitude/longitude degrees) or in local projected CRS. For CAD use, a local projected CRS in meters or feet is essential — geographic degree-based coordinates are not usable in a CAD drawing environment.

| Property | Value | |---|---| | Extension | .shp + .shx + .dbf + .prj (delivered as .zip) | | Type | Vector, multi-file bundle | | Coordinate system | Any CRS (stored in .prj) | | Geometry types | Point, Polyline, Polygon, MultiPoint (one type per file) | | Common software | ArcGIS, QGIS, Tableau, AutoCAD Civil 3D, government portals |

DXF format

DXF (Drawing Exchange Format) is Autodesk's documented open format for CAD data interchange. It organizes geometric entities — lines, polylines, arcs, circles, points, blocks, text — using a layer-based structure that has no native concept of a geographic coordinate reference system. The format is used across the engineering, architecture, and surveying industries as the universal "send to any CAD tool" format. AutoCAD, Civil 3D, MicroStation, BricsCAD, LibreCAD, and SketchUp all read DXF natively.

| Property | Value | |---|---| | Extension | .dxf | | Type | Vector, single file (ASCII or binary) | | Coordinate system | No native CRS; assumes project or local coordinate space | | Geometry types | Lines, Polylines, Points, Arcs, Circles, Blocks, Text | | Common software | AutoCAD, Civil 3D, MicroStation, BricsCAD, LibreCAD, surveying tools |

Frequently asked questions

What happens to the DBF attribute table when converting a Shapefile to DXF?

DXF has no native attribute table. geodata.plus encodes all DBF column values as XDATA (extended entity data) attached to each DXF entity, and the DBF name or NAME column (if present) is also written as the entity's name string. XDATA is accessible via AutoCAD's ENTGET API and custom LISP or .NET routines, but is not visible in the standard Properties panel. For workflows where attributes must be visible in CAD, a common approach is to add text labels in AutoCAD manually or use the Civil 3D data shortcut workflow.

Should I reproject my Shapefile before converting to DXF, and how do I know which EPSG to use?

Yes — reprojection is almost always necessary. If your Shapefile is in a geographic CRS (EPSG:4326 WGS84 or EPSG:4269 NAD83), the coordinates are in decimal degrees, and geometry in AutoCAD will appear at a tiny scale near the prime meridian. Reproject to the local projected CRS used in your project area: for US projects, look for the relevant state plane (EPSG:32xxxx) or UTM zone. For UK projects, EPSG:27700 (OSGB36 British National Grid) in feet or EPSG:7405 in metres. Your civil engineer or surveyor should know the correct CRS for the project.

How are Shapefile Polygon geometries represented in DXF?

Polygon exterior rings are written as closed LWPOLYLINE entities. Interior rings (polygon holes) are written as separate closed LWPOLYLINE entities on a layer named {original_layer}_holes. AutoCAD can apply hatch patterns using these boundary polylines, and Civil 3D can assign surface boundaries accordingly. Note that DXF LWPOLYLINE entities are planar and 2D — Z coordinate values from the Shapefile geometry are preserved if present.