DXF Unit Converter
Convert DXF files between millimetres, inches, and other unit systems. Fix unit mismatches when importing DXF between different CAD applications.
Maker & CNC Workflow Suite
Seamlessly move your design from vector artwork to machine-ready G-code. Use our connected suite of free, private fabrication tools.
AutoCAD R12/R14 DXF export for LightBurn, Fusion 360 & CAD.
Convert engineering DXF drawings back to clean web-ready SVG vectors.
Convert vector boundaries and polygons to GeoJSON & KML for QGIS and web mapping.
Generate clean GRBL G-code toolpaths directly from SVG files for laser & routers.
Raster photo engraving with M4 dynamic power & Floyd-Steinberg dithering.
Interactive 2D/3D cut simulation, time estimate, and workpiece bounds check.
CAM toolpath generation for Mach3, LinuxCNC, and multi-pass CNC routing.
Calculate optimal spindle RPM, feed speed, and chip load per tooth.
How to Use
Upload DXF
Upload your DXF file.
Select source and target units
Choose the current DXF unit (mm or inch) and the target unit.
Download converted DXF
Download the DXF with all coordinates rescaled to the target unit.
Fixing DXF Unit Mismatches
The DXF format technically supports a units declaration, but many CAD applications export DXF without it, or import DXF ignoring the declared units. This causes the well-known "25.4x wrong" scaling problem when exchanging DXF between metric and imperial systems. This converter rescales all coordinates in the DXF to the correct target unit.
Real-World Examples & Use Cases
Cross-system Compatibility
Convert a metric DXF from a European supplier to imperial for use in a US CNC shop.
Frequently Asked Questions
Why do DXF unit mismatches happen?▼
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