The free BIM viewer built for coordination
Load one IFC model — or federate five — straight from your desktop. Parsing happens on your device, so nothing is uploaded and nobody else sees your project.
Drop your IFC file here
IFC2x3 · IFC4 · IFC4x3 · .ifczip
Your file is processed locally in your browser. Nothing is uploaded.
Working with a real delivery? Give it the full-screen viewer — same engine, the whole viewport, still nothing uploaded.
Built for coordination
Three ways AEC teams run their week on BIMViewer — no licenses handed out, no files mailed around.
BIM manager
The weekly coordination pass
Federate the latest architecture, structure and MEP exports in one scene. Cut a section through the plant room, isolate the ducts that graze a beam, and snapshot each finding for the coordination report. Before any model enters the federation, run it through the validator so broken deliveries never reach the meeting.
Engineer
Working against another discipline
The architect's model lands in your inbox and you don't have their authoring software — you don't need it. Open the IFC here, isolate the storey you're designing for, measure openings and clearances, and check beam or slab data in the properties explorer before you model against a wrong assumption.
Architect
Checking your own export
Issue day. Before the IFC goes out, open it exactly as the consultants will: confirm the storey structure survived export, spot-check that property sets carried over, and if the file ballooned, pass it through the compressor so the upload to the CDE doesn't take all afternoon.
Works with your BIM software
Anything that exports IFC lands here. A quick pointer per authoring tool — and a full walkthrough of the Revit → IFC export settings in the blog.
Revit
File → Export → IFC. Prefer the IFC4 Reference View setup; map your custom parameters to property sets in the export options.
ArchiCAD
File → Save as → IFC. The translator you pick decides what data survives — start from the General Translator and trim from there.
Tekla Structures
Export to IFC4 for coordination models; Tekla's geometry is already lean, so exports federate fast.
Bonsai (BlenderBIM)
Nothing to export — Bonsai authors the IFC natively. Save and drop the same file straight into the viewer.
Civil 3D
Use the IFC export for corridors and structures; IFC4x3 infrastructure entities are supported here.
From viewing to auditing
The tools on this site aren't a catalog — they're the stations a model passes through on its way to a clean federation.
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01 · VIEW
A discipline model arrives. Open it in the viewer, walk the storeys, and get a feel for what was actually delivered.
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02 · AUDIT
Run the validator before accepting it: truncated exports, duplicate GlobalIds and dangling references surface in a shareable report.
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03 · SLIM
Heavy export? The compressor merges duplicate geometry and sweeps orphaned records, then re-parses its own output as proof.
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04 · FEDERATE
Clean models go back into one scene — or into IFC Merge when the milestone calls for a single federated file.
File size
Elsewhere: Free tiers top out long before a real project model does
BIMViewer: If your device can hold the model, we can open it — federated sets included
Daily use
Elsewhere: A few views or exports per day before the upgrade screen appears
BIMViewer: View, audit and convert as often as your project demands, at no cost
Your model
Elsewhere: Pushed to a server queue and parked in someone else's cloud
BIMViewer: Parsed by WebAssembly on your own device — close the tab and it's gone
- to audit a 937,000-entity model for defects
- 2.5 s
- to pull 118,000 elements into Excel
- 10.6 s
- stress model — parsed on-device, never uploaded
- 67 MB
Measured by this site's automated QA suite on real project models — every figure is recorded before it is published.
The coordination workbench
Everything a BIM model needs between delivery and federation — in the browser, for free.
BIM Viewer
Walk any IFC model in 3D — spatial tree, element data, sections, measurements.
Live — use it free
IFC to Excel
Turn model data into spreadsheets: elements, property sets and quantities in .xlsx.
Live — use it free
IFC to glTF
Repackage BIM geometry as compact .glb for websites, Blender or a game engine.
Live — use it free
IFC Properties
Audit element data without rendering a triangle — search by class, name or GlobalId.
Live — use it free
IFC Compressor
Slim heavy models before they hit the common data environment. Output re-verified.
Live — use it free
IFC Merge
Deliver one federated IFC from separate discipline files, hierarchies intact.
Live — use it free
IFC Validator
Gate incoming models: syntax, broken references, duplicate GlobalIds — with a report.
Live — use it free
All BIM tools
The coordination workbench around the viewer — every step free and local.
See the workbench →
Frequently asked questions
Can I view several BIM models together?
Yes — that is the point of BIMViewer. Drop the architecture, structure and MEP exports into the same scene and inspect them as one federated building. Each model keeps its own spatial tree, and you can hide or isolate per discipline.
Are my models uploaded anywhere?
Never. Parsing is done by WebAssembly running inside the page itself, so geometry and data stay on your device. There is no server on the other end, which also means no account and no waiting in a queue.
Which formats and IFC schemas does it read?
IFC files in the IFC2x3, IFC4 and IFC4x3 schemas, plus zipped .ifczip archives. That covers the default export from Revit, ArchiCAD, Tekla Structures, Bonsai (BlenderBIM) and Civil 3D.
How large can a federated set be?
There is no artificial cap. Practical headroom depends on your device's memory — combined sets around 300 MB are workable on a desktop, and we show a gentle heads-up once you pass 150 MB (80 MB on mobile).
Can I use it for clash detection?
For visual coordination, yes: federate the disciplines, cut sections through suspect zones, isolate elements and measure clearances. BIMViewer does not run automated rule-based clash tests — for a written quality gate, pair it with the IFC Validator.
Is BIMViewer really free?
The viewer and every tool on this site are free without limits on files or frequency. A future Premium tier will add server-side extras such as persistent share links — viewing and auditing stay free.
New to building information modeling? Start with what is BIM? — or keep an eye on the blog for coordination and export guides.