Free Online IFC Viewer (No Signup)
Also opens DWG, DXF, STEP, IGES, IFC, SKP, STL, OBJ, GLB, FBX, 3DM and other 3D/CAD files — drop any file on the viewer.
Works in Chrome, Firefox, Safari, and Edge — no plugin required
Also from Innerscene: Circadian Lab, a free lighting calculator for room illuminance, melanopic EML, and glare.
What Is a IFC File?
IFC (.ifc) is the open BIM (Building Information Modeling) exchange format, governed by buildingSMART and standardized as ISO 16739. Unlike a plain mesh, an IFC file is a semantic model of an entire building: walls, slabs, columns, beams, windows, doors, stairs, railings, and MEP systems, each carrying properties (materials, fire ratings, quantities) and the spatial structure that nests them into sites, buildings, and storeys.
Under the hood, an IFC file is a STEP physical file (the same ISO-10303-21 text encoding used by STEP CAD files), with geometry expressed as extrusions, boolean cut-outs, B-reps, and tessellated meshes. If a project team has sent you an .ifc file, this viewer opens it in your browser, no Revit, ArchiCAD, or BIM seat required.
Who Uses IFC Files?
IFC is the lingua franca of coordinated building projects. Architects author it in Revit, ArchiCAD, Vectorworks, and Bentley; structural and steel-detailing teams export it from Tekla Structures; and everyone federates their models in coordination tools like Navisworks, Solibri, and BIMcollab. Because it is open and vendor-neutral, IFC is increasingly a contractual deliverable and is required for public-works BIM submissions in a growing number of countries.
Common Use Cases
- Open an .ifc model from an architect or engineer without a BIM license
- Review a federated building model shared for coordination or clash review
- Check a Revit, ArchiCAD, or Tekla IFC export before passing it downstream
- Walk a client or contractor through a building model in the browser
- Convert an IFC model to GLB for the web, or to STL / OBJ for other tools
- Share a link to a building model without making the recipient install BIM software
Features
Open Instantly
Drag and drop a .ifc file — it parses and renders in your browser using the open-source web-ifc engine.
Full Building Model
Walls, slabs, columns, beams, windows, doors, stairs, railings, and MEP render together as one coordinated model.
Layers by Element Type
Elements are grouped into layers (Walls, Windows, Doors, Slabs, and more), so you can toggle disciplines on and off.
IFC2X3, IFC4 & IFC4X3
Reads the schemas Revit, ArchiCAD, Tekla, and other BIM tools export, auto-detected from the file header.
3D Navigation
Orbit, pan, and zoom with mouse or touch to walk through and inspect the building.
Live Load Progress
Large building models take time to tessellate; an elapsed-time counter and live status keep you informed.
Convert to GLB
Export your IFC as a GLB file — the universal 3D format for Blender, Unity, and the web.
Convert to STL
Export a triangulated STL mesh ready for 3D printing, CNC, or simulation.
Convert to OBJ
Save as Wavefront OBJ for use in 3ds Max, Maya, Cinema 4D, and other tools.
Export as PDF
Save the current view as a clean PDF — ideal for reviews, submittals, and reports.
No Upload Required
Your IFC file is parsed entirely in your browser. Nothing leaves your computer.
Embed on Any Site
Add the IFC viewer to your website with a single iframe embed code.
Compatibility & Format Notes
This viewer reads IFC with web-ifc (the open-source buildingSMART-aligned WebAssembly engine), covering the IFC2X3, IFC4, and IFC4X3 schemas that Revit, ArchiCAD, Tekla, and other authoring tools export. Elements are grouped into layers by type, Walls, Windows, Doors, Slabs, and so on, so you can toggle disciplines on and off.
IFC building models can be very large; a full multi-storey project may take up to a minute to read and tessellate, and the loading screen shows live progress while it works. Property-only or spatial-structure-only exports (no geometry) will report that there is nothing to display, in that case, re-export from the authoring tool with geometry included.
Embed on Your Website
Add this viewer to your own site with a single line of HTML. Click Embed in the toolbar to generate an embed code, or use the snippet below with your own file URL.
Your Files Stay on Your Computer
Your IFC files are parsed entirely in your browser. Nothing is uploaded, stored, or shared unless you explicitly click the Share button. Shared files are hosted for 90 days then deleted.
Frequently Asked Questions
▶What is an IFC file?
IFC (Industry Foundation Classes) is the open, vendor-neutral file format for BIM, building information models. An IFC file describes an entire building, walls, slabs, windows, doors, structure, and MEP, as semantic objects with properties, not just geometry. It is governed by buildingSMART and standardized as ISO 16739.
▶Do I need Revit or ArchiCAD to open an IFC file?
No. This free online viewer reads .ifc files directly in your browser using the open-source web-ifc engine. No Revit, ArchiCAD, Tekla, or other BIM software is needed, and nothing is uploaded.
▶Which IFC versions are supported?
The viewer opens the common schemas, IFC2X3 (the most widespread, still exported by many Revit workflows), IFC4, and IFC4X3. It auto-detects the schema from the file’s FILE_SCHEMA header.
▶Why does my IFC file take a while to open?
IFC geometry is built from extrusions, boolean cut-outs, and B-reps that must be evaluated and tessellated before anything can be drawn. A large building model (hundreds of megabytes, thousands of elements) can take up to a minute. The loading screen shows an elapsed-time counter and live status so you can see it is still working.
▶Can I convert IFC to another format?
Yes. Export the model to GLB (glTF binary) for the web, STL for 3D printing, OBJ for other 3D tools, or PDF for a snapshot of the current view, all from the toolbar. Converting back to a native BIM format is not offered, for that, re-export from the authoring tool.
▶Is this IFC viewer really free?
Yes, completely free. No signup, no watermarks, no file size limits on the viewer (the optional share-link feature has a 100 MB upload cap). Built by Innerscene as a tool for architects, engineers, and designers.
▶Are my files uploaded to a server?
No. All parsing, rendering, and conversion runs in your browser — nothing is uploaded, stored, or transmitted by default. The Share button is the only feature that uploads a file, and only when you explicitly click it.
▶Can I convert to another format?
Yes. Click Export in the toolbar to save as STL (3D printing), OBJ (Wavefront), GLB (glTF binary), or PDF (snapshot of the current view).
▶Can I embed this viewer on my own site?
Yes. Click Embed in the toolbar to generate a one-line <iframe> snippet you can paste into any HTML page. You can choose whether the embed shows the viewer’s toolbar.