Warning · Data quality
How to fix Large coordinate offset
in IFC files
Keep the model near the internal origin and georeference it properly, instead of modelling at large real-world coordinates.
Check your IFC file — free
No account · No upload · Runs in your browser · 38 validation checks
What it means
The Large coordinate offset check
Model geometry is more than 10 km from the WCS origin — causes floating-point precision errors
The fix
How to fix Large coordinate offset in your authoring tool
Concrete, tool-specific steps. The check itself is schema-agnostic and works for IFC2x3, IFC4, IFC4x1 and IFC4x3.
| Authoring tool | How to fix |
|---|---|
| Revit | Don’t model far from Revit’s internal origin. Use Shared Coordinates with a Survey Point / Project Base Point and export with current shared coordinates so geometry stays near origin while georeferencing is preserved. |
| ArchiCAD | Set the Survey Point and Project Origin; keep the model near origin and use IFC georeferencing (IfcMapConversion) instead of a large offset. |
| Tekla | Set the base/work point and keep the model near origin; use the IFC export base point so coordinates aren’t huge. |
| Allplan | Set a project georeferencing/base point and keep geometry near origin rather than at real-world coordinates. |
How it works
Find and fix it in the browser
The whole flow runs client-side — your IFC file never leaves your machine.
01
Open your IFC file
Open IFC Viewer Online and drag & drop your IFC file. It is parsed locally in your browser via WebAssembly — nothing is uploaded.
02
Run the Health Score validation
Run validation. The "Large coordinate offset" check (RULE_COORDINATE_OFFSET) flags every affected element and pinpoints it in the model tree.
03
Fix in Revit
Don’t model far from Revit’s internal origin. Use Shared Coordinates with a Survey Point / Project Base Point and export with current shared…
04
Fix in ArchiCAD
Set the Survey Point and Project Origin; keep the model near origin and use IFC georeferencing (IfcMapConversion) instead of a large offset.
05
Fix in Tekla
Set the base/work point and keep the model near origin; use the IFC export base point so coordinates aren’t huge.
06
Fix in Allplan
Set a project georeferencing/base point and keep geometry near origin rather than at real-world coordinates.
07
Re-validate
Re-export from your authoring tool and re-run validation to confirm the issue is resolved and your Health Score improved.
Related checks
Other Data quality checks →
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