Free · no sign-up · files stay on your device

Online CAD Converter

Convert DWG, DXF, STEP, IGES, IFC, STL, OBJ, GLB, FBX, Rhino 3DM, 3MF and more right in your browser. Upload a file, we detect the format and list only the conversions that really work. Up to 50 MB per file. Revit, Navisworks, DGN and other closed formats? Our team converts them for you.

🔒 Conversion runs locally with open-source WebAssembly (LibreDWG, OpenCascade, web-ifc, rhino3dm, three.js, pdf.js). Nothing is uploaded. Free – no credits used.

Browse by category

101 tested CAD/3D conversions plus everyday PDF, Office and image tools.

2D CAD

Drawings: AutoCAD DWG/DWT/DXF, SVG vectors and PDF plans.

DWG

DWT

DXF

SVG

PDF

DWG version converter

Upload a DWG of any version (R13 – AutoCAD 2018). We read its version and list only the outputs that passed our tests: DXF in the same version, or DXF 2013 / 2010 / 2007 / 2004 for AutoCAD 2004–2018 drawings, and DXF in the same version for R13 / R14 / 2000 drawings. Runs in your browser with LibreDWG.

Need a DWG file in another version (AutoCAD 2018 / 2013 / 2010 / 2007 / 2004 / 2000 / R14), a DXF R12 / R14, or a newer drawing saved down to 2000? No free browser tool writes these reliably yet – our tests found missing or duplicated objects – so we don't offer them here. Two options: 1) In AutoCAD or free DWG TrueView use SAVEAS / DWG Convert and pick the version, or use the free ODA File Converter on your PC; or 2) send the file to the CAD BOLT team.

DWG → DWG (2018, 2013, 2010, 2007, 2004, 2000, R14) Expert conversionAutoCAD: SAVEAS and choose the version · DWG TrueView: DWG Convert · or the free ODA File Converter.WhatsApp us Email
DXF R12 / R14, or 2004+ → DXF 2000 Expert conversionAutoCAD: SAVEAS › AutoCAD R12/LT2 DXF or 2000 DXF · or the free ODA File Converter.WhatsApp us Email

These formats are closed/proprietary (Autodesk Revit, Navisworks, ReCap, etc.), so no website can open them for free. Two options: 1) Export from your software to an open format we support (e.g. Revit to IFC/DWG/FBX/OBJ, Navisworks to FBX, ReCap to E57/PLY) and convert here free, or 2) Send the file to the CAD BOLT team on WhatsApp/Email and we'll convert it for you.

FormatWhat to do
.dgn Expert conversionMicroStation DGN: in MicroStation use File › Save As › DWG or DXF, then convert here.WhatsApp us Email
.dwf Expert conversionAutodesk DWF: ask for the original DWG, or open it in Design Review and print to PDF.WhatsApp us Email
.dwfx Expert conversionAutodesk DWFx: ask for the original DWG, or open it in Design Review and print to PDF.WhatsApp us Email

BIM

Open BIM IFC models; Revit and Navisworks via our team.

Got a Revit file? Export it to IFC and convert it here.

IFC

These formats are closed/proprietary (Autodesk Revit, Navisworks, ReCap, etc.), so no website can open them for free. Two options: 1) Export from your software to an open format we support (e.g. Revit to IFC/DWG/FBX/OBJ, Navisworks to FBX, ReCap to E57/PLY) and convert here free, or 2) Send the file to the CAD BOLT team on WhatsApp/Email and we'll convert it for you.

FormatWhat to do
.rvt Expert conversionRevit project: in Revit use File › Export › IFC (or DWG / FBX), then convert the IFC here to GLB, OBJ or STL.WhatsApp us Email
.rfa Expert conversionRevit family: load it into a project, then File › Export › IFC or DWG, and convert that here.WhatsApp us Email
.rte Expert conversionRevit template: it holds settings, not a model. Start a project from it and export to IFC or DWG.WhatsApp us Email
.nwc Expert conversionNavisworks cache: export the original model (Revit, AutoCAD…) to IFC or FBX instead and convert it here.WhatsApp us Email
.nwd Expert conversionNavisworks document: in Navisworks use Output › Export › FBX, then convert the FBX here.WhatsApp us Email
.nwf Expert conversionNavisworks file set: it only links other files. Open it in Navisworks and export to FBX.WhatsApp us Email

3D Mesh

Meshes for 3D printing, web, games and visualisation.

STL

OBJ

GLB

GLTF

PLY

3DS

FBX

DAE

3MF

AMF

VTK

Solid / CAD exchange

B-rep solids from SolidWorks, Inventor, CATIA, Fusion, Rhino – tessellated to meshes.

STEP

STP

IGES

IGS

BREP

3DM

These formats are closed/proprietary (Autodesk Revit, Navisworks, ReCap, etc.), so no website can open them for free. Two options: 1) Export from your software to an open format we support (e.g. Revit to IFC/DWG/FBX/OBJ, Navisworks to FBX, ReCap to E57/PLY) and convert here free, or 2) Send the file to the CAD BOLT team on WhatsApp/Email and we'll convert it for you.

FormatWhat to do
.sat Expert conversionACIS SAT: in your CAD app (SpaceClaim, Inventor, Fusion) export to STEP, then convert the STEP here.WhatsApp us Email
.sab Expert conversionACIS SAB: export from your CAD app to STEP, then convert the STEP here.WhatsApp us Email

Point Cloud

Laser-scan point clouds (PLY point clouds work under 3D Mesh).

These formats are closed/proprietary (Autodesk Revit, Navisworks, ReCap, etc.), so no website can open them for free. Two options: 1) Export from your software to an open format we support (e.g. Revit to IFC/DWG/FBX/OBJ, Navisworks to FBX, ReCap to E57/PLY) and convert here free, or 2) Send the file to the CAD BOLT team on WhatsApp/Email and we'll convert it for you.

FormatWhat to do
.rcp Expert conversionReCap project: in ReCap use Export › E57 or PLY. PLY point clouds/meshes can be converted here.WhatsApp us Email
.rcs Expert conversionReCap scan: export from ReCap to E57 or PLY, then convert the PLY here.WhatsApp us Email

PDF Tools

Everyday PDF jobs, processed on your device.

Office ↔ PDF

We only offer what converts honestly in a browser. For the others, use the tip on the card or send the file to our team.

Word to PDFTip: in Word use File › Save As › PDF for a perfect copy – or send it to our team.Expert conversionSend to CAD BOLT team →
PowerPoint to PDFTip: in PowerPoint use File › Export › PDF – or send it to our team.Expert conversionSend to CAD BOLT team →
Excel to PDFTip: in Excel set the print area, then File › Save As › PDF – or send it to our team.Expert conversionSend to CAD BOLT team →
PDF to ExcelTip: if the PDF came from Excel, ask for the .xlsx; otherwise our team rebuilds the tables.Expert conversionSend to CAD BOLT team →

Image tools

Also: SVG → PNG/JPG/PDF and PDF → PNG/JPG in the converter above.

SVG to PNG / JPG / PDFSharp 3000 px raster or PDF page.Free · in-browser

Frequently asked questions

Is the CAD BOLT online CAD converter free?

Yes. Conversions are free with no sign-up, for files up to 50 MB. It does not use render or planner credits.

Are my drawings uploaded to a server?

No. Every conversion runs inside your browser using open-source WebAssembly readers (LibreDWG, OpenCascade, web-ifc, rhino3dm, three.js, pdf.js). Your file never leaves your device.

How do I convert DWG to PDF online?

Drop the .dwg file into the converter, choose PDF in the 'Convert to' list and press Convert. LibreDWG reads AutoCAD R13 to 2018+ drawings and the model space is written as a vector A4 PDF. You can also get DXF, SVG or PNG.

How do I convert STEP to STL?

Upload a .step or .stp file, pick STL and convert. OpenCascade tessellates the solids into a binary STL ready for 3D printing. OBJ, GLB, glTF and PLY are also available.

Can I convert IFC to OBJ or GLB?

Yes. web-ifc builds the IFC geometry (IFC2x3 and IFC4) in the browser and exports it as GLB, glTF, OBJ, STL or PLY. Property sets are not carried into mesh formats.

Why can't I convert RVT, NWD or DGN files?

Revit (RVT/RFA/RTE), Navisworks (NWC/NWD/NWF), ReCap (RCP/RCS), DWF/DWFx, ACIS SAT/SAB and MicroStation DGN v8 are closed formats with no free browser reader. Send them to the CAD BOLT team on WhatsApp +91 93556 41230 or [email protected] and we convert them with licensed software.

Can I password-protect, compress, merge or split a PDF for free?

Yes. The PDF tools on this page run in your browser: AES-256 password protection (qpdf), compression, merge, split, PDF to images, images to PDF, PDF to Word (editable text) and PDF to PowerPoint (one slide per page).

Can I change the version of a DWG file online?

Yes, partly. The DWG version converter reads DWG files from R13 to AutoCAD 2018 and saves them as DXF in the same version, or as DXF 2013, 2010, 2007 or 2004 for AutoCAD 2004–2018 drawings (same-version DXF for R13–2000 drawings). Saving as DWG in another version, as DXF R12/R14, or down to DXF 2000 is not reliable in any free browser tool yet, so use AUTOCAD SAVEAS, DWG TrueView or the free ODA File Converter – or send the file to our team.

Can I convert RVT files?

Not directly – Revit RVT is a closed Autodesk format that no website can open for free. In Revit use File › Export › IFC (or DWG/FBX), then upload the IFC here and convert it to GLB, OBJ or STL for free. Or send the RVT to the CAD BOLT team on WhatsApp +91 93556 41230 or [email protected] and we convert it for you.

Why is Word, PowerPoint or Excel to PDF marked Expert conversion?

Exact Office layouts need LibreOffice or Microsoft Office running on a server, which our serverless hosting cannot run. Rather than give you a broken PDF we point you to Save As › PDF in Office or convert it for you; our team can convert these files for you meanwhile.

What are the limits?

50 MB per file, one file at a time. DWG/DXF conversion draws lines, polylines, arcs, circles, ellipses, splines, text and blocks; hatches, images and paper-space layouts are skipped. Mesh formats keep geometry and basic colours, not CAD history or BIM data.

Need drafting, BIM or a full model, not just a file?

CAD to BIM, Revit modelling, PDF to CAD redraws and Scan-to-BIM by our engineers.

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