Convert JWC to DXF Structuralβ
No signup, unlimited use. Drop a file to convert Jw_cad DOS版 (JWC) to DXF and preview the result instantly. Deterministic conversion — entities are mapped one-to-one wherever possible.
- 01Drop your drawing file
- 02Pick a format & convert
- 03Preview & download
When you need this
- Open a JWC file in the CAD software you already use
- A partner sent JWC drawings your tools can't read
- Feed JWC drawings into software that doesn't support the format
About converting JWC to DXF
Received a .jwc file? It is a drawing from the DOS-era Jw_cad, and almost nothing opens it today — not even most Japanese CAD tools. zumen-gate reads JWC directly in your browser and converts it to DXF (beta), so you can open the drawing in AutoCAD or any other CAD without hunting for a vintage Jw_cad setup.
JWC is the drawing format of the DOS-era Jw_cad (JW_CAD), the predecessor of the Windows Jw_cad still popular in Japan. Many Japanese architectural drawings from the 1990s survive only as .jwc files, and virtually no current CAD software opens them. zumen-gate reads JWC in beta (lines, circles, arcs, ellipses, text, points).
The converted DXF opens in AutoCAD, BricsCAD, LibreCAD, QCAD, and practically any other CAD application. You can choose between R2010 (AC1024) for modern software and R12 (AC1009) for older tools.
All conversions run through a single engine with a common intermediate representation. Every conversion produces a loss report tallying which entities were converted as-is and which were approximated or dropped — so you can trust the output, or know exactly why not.
FAQ
JWC → DXF conversion — frequently asked questions
What is a .jwc file?
A .jwc file is a drawing saved by the DOS version of Jw_cad (JW_CAD), a Japanese 2D CAD application from the 1990s. It predates the .jww format of the Windows Jw_cad; the current Jw_cad can still read it, but other CAD software cannot.
How are coordinates and scales handled?
DXF output uses real-world millimetres: each layer group's scale is applied to its own entities. PDF, SVG, and PNG output keep the paper layout, so drawings that mix several scales still look like the printed sheet.
Which DXF version should I choose?
Choose R2010 (AC1024) for AutoCAD and most modern CAD software. Choose R12 (AC1009) for older CAD applications or CNC/CAM tools. If unsure, try R2010 first and fall back to R12 if it won't open.
Will my drawing break when converting JWC to DXF?
The conversion is a deterministic, structural translation through a common intermediate representation. After every conversion you get a loss report listing exactly which entities were converted, approximated, or dropped — so you can verify the result on the spot.
Is there a limit on conversions or downloads?
No. Conversions and downloads are unlimited, and no account is required. The only limit is 10MB per file.
What happens to the files I upload?
Transfers and storage are encrypted, and your drawings are never sold or shared with third parties. On the free tier, uploads are used to improve the service and train our AI models, so please avoid uploading confidential drawings. A no-training Pro plan is available — see the data policy page for details.