SVG to DXF (MM Scale Preserved)

Convert SVG to DXF with millimetre scale preserved. Ideal for precision manufacturing where exact real-world dimensions matter.

DXF Version

Source DPI

Output Unit

Web/Inkscape SVGs use 96 DPI. Adobe Illustrator defaults to 72 DPI.

Drop your SVG file here or click to browse

Accepts .svg files · Processed in browser · Private

How to Use

Upload SVG file

Upload your SVG. Ensure your SVG uses mm or has a correct viewBox.

Set DPI / scale

Select the source DPI (usually 96 for web SVGs) for accurate mm conversion.

Download scaled DXF

Download a DXF where 1 DXF unit = 1 millimetre.

Why Scale Preservation Matters in SVG to DXF Conversion

One of the most common problems when converting SVG to DXF is incorrect scaling. SVG files store dimensions in pixels (px) or abstract user units, while DXF files are unit-less by convention — meaning the downstream CAD or CNC software may interpret the dimensions incorrectly.

This tool explicitly resolves the pixel-to-millimetre relationship using the SVG's declared DPI (dots per inch). A standard web SVG at 96 DPI means that 96 SVG units equal one inch, or approximately 25.4 SVG units equal one millimetre. The converter applies this ratio, so the resulting DXF has exactly the dimensions the designer intended.

Common Pitfalls to Avoid

Using 72 DPI for an Inkscape SVG (Inkscape uses 96 DPI since version 0.92)
Resizing the SVG in a browser before exporting — this can alter the viewBox
Not checking the physical size in your CAD software after importing

Real-World Examples & Use Cases

Precision Sheet Metal Parts

Design a bracket in Inkscape at exactly 150×80mm, then convert to DXF for a CNC punch press with guaranteed millimetre accuracy.

Woodworking Jigs

Create jig designs in Figma at real-world size, export as SVG, and convert to DXF for a wood router without any rescaling in CAD.

Frequently Asked Questions

Why does scale matter in DXF?▼

DXF files have no inherent units. A shape that is 100 units wide could be 100mm or 100 inches depending on how the CAD software interprets it. This tool normalises the output so 1 DXF unit = 1 mm.

What DPI should I use?▼

Web browsers render SVG at 96 DPI. Inkscape uses 96 DPI by default. Illustrator defaults to 72 DPI. Select accordingly.

Does this affect accuracy for CNC routing?▼

Yes — scale accuracy is critical. A 10% scaling error on a 100mm part means a 10mm error, which could make the part unusable.

Can I convert SVG in inches instead?▼

Use our SVG Scale Converter to first convert px dimensions to the desired unit, then export the DXF.

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