Write a native r2000 DWG from any DXF — the format every AutoCAD since 2000 opens without a word. Free account, no card. If a drawing cannot be written faithfully we say so instead of handing you a broken file.
Output: DWG — native r2000 CAD file
Checking converter…
Writing DWG needs a free account (no card). Create one and convert right after.
Working through the drawing. A large plan can take up to a minute.
Going the other way is free and needs no account — DWG to DXF.
DXF and DWG carry the same drawing. DXF is the open interchange format; DWG is Autodesk’s native binary one. Technically DXF is the safer file to send — but the receiving end frequently insists on DWG, and that is a requirement you have to satisfy rather than argue with.
Plenty of fabricators, architects and plan reviewers have a hard DWG-only intake rule. Your drawing may be perfectly good as a DXF and still get bounced on format alone.
LibreCAD, QCAD, Fusion, Inkscape-via-DXF and CADdillo itself all export DXF happily. Converting to DWG is the last step that makes the file look native to whoever receives it.
Open their DWG, fix what needs fixing, convert back to DWG and send it on. The file returns in the format it arrived in, so nobody on the other end has to think about it.
Records and handover packages are often specified as DWG. Converting once at the end keeps the deliverable set consistent without redrawing anything.
The DWG write path needs a signed-in account — no card, no paid plan. Reading DWG is anonymous and free; writing it is the one direction we meter, because generating DWG bytes is the expensive half.
Any DXF version, up to 30 MB. The file is checked against the encoder’s limits before conversion starts, so a drawing that cannot be written faithfully is caught up front rather than halfway through.
You get a native binary DWG back. If the drawing tripped the fidelity boundary, you get an explanation and a one-click route to a modern DXF instead — which every AutoCAD opens just as readily.
Writing DWG is harder than reading it, and pretending otherwise is how people end up with files that open but are quietly wrong. These are the real boundaries, stated before you upload rather than after.
The doctrine behind this: native r2000 DWG for small and medium drawings, modern DXF for large ones or anything with MULTILEADER. Both open everywhere that matters.
The reverse trip — free, anonymous, reads r11 through r2018.
Vector artwork all the way to a native CAD file.
Pull geometry out of a vector PDF and write it as DWG.
Handling reference images alongside the CAD file? imageinseconds.com resizes and converts them in the browser, free, with no upload.
Create a free CADdillo account, then drop your .dxf on the converter above. It returns a native r2000 DWG. The account is free with no card and exists because writing DWG is the metered direction — reading DWG the other way is fully anonymous. If the drawing contains MULTILEADER entities or runs past roughly 66,000 entities the conversion is refused with an explanation rather than producing a questionable file.
Because r2000 is the version that writes correctly. Newer DWG write support in the available open encoder is incomplete and produces files that can be subtly corrupt — which is far worse than an older version number, since the damage may not surface until someone is deep into editing. r2000 (AC1015) opens in every AutoCAD release from 2000 onward and in BricsCAD, DraftSight, ZWCAD and the rest. In practice nobody will notice the version; they will notice a broken file.
Export a modern DXF instead and send that. This is genuinely a good outcome rather than a consolation prize: R2018 DXF is a current, fully-featured format that every AutoCAD and every major CAD package opens natively, and it carries the entities the r2000 DWG encoder would have had to drop or approximate. If the recipient specified DWG out of habit rather than a real pipeline constraint — which is usually the case — a DXF will do the job. Refused conversions do not count against your free export quota.
For everything inside the boundary, yes — lines, polylines, arcs, circles, ellipses, text, blocks, layers and layer colours all carry across, and coordinates are not re-approximated. The refusals exist precisely so the answer to this question can stay "yes": rather than converting a MULTILEADER into something that looks nearly right, the conversion stops and tells you.
Not to start. A free account includes a set number of DWG exports, and paid plans remove the cap. Everything in the other direction — DWG to DXF, PDF, SVG or PNG — is free with no account for five files a day. The asymmetry is deliberate and reflects where the actual cost sits.
No. DWG conversion has to run server-side because there is no practical in-browser DWG codec, so the file is uploaded. The upload and the DWG it produced are both deleted immediately after the response is returned. Everything else CADdillo does with DXF — viewing, editing, exporting — happens entirely in your browser with no upload at all.
