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Downloads too slow or GitHub blocked? Use the mirror: cadbimconverter.com/download (same files, same SHA-256 sums).
Turn CAD/BIM files into open, structured data — locally, offline, without CAD licences.
.rvt / .rfa → GLB · glTF · OBJ · IFC4 · JSONL/CSV | .ifc → Excel · JSONL · SQLite | .dwg → Excel · CSV · JSONL · DXF · SVG
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DDC Converters 2.0 is the October 2026 release of the whole line: RVT Converter 2.0, RVT to IFC 2.0, IFC to Excel 2.0, CAD Drawing to Excel 2.0, Data Viewer 2.0 and Excel Add-in 2.0. The current RVT Converter and RVT to IFC build is 2.0.2.
- One tool per format family.
.rvt/.rfato GLB, glTF, OBJ, IFC4 and JSONL / CSV / SQLite tables;.ifc/.ifczipto Excel, JSONL and SQLite;.dwgto Excel, CSV, JSONL, DXF and SVG. - Revit 2016–2027 files are read directly, with no Revit installation needed.
- IFC4 export from Revit with property sets, quantities, classification and materials, and the profiles
full,coordinationandgeometry; units, origin, category and phase options on the command line. - Element ids everywhere. Every geometry node keeps the native element id, so tables and 3D join by
ElementId. - A report for every run.
report.json/summary.jsonlist what was read and what was skipped, with counts. - Desktop apps and command line for each converter, batch-friendly exit codes and one-line JSON status for scripts.
- DDC Data Viewer 2.0: free table and 3D viewer with two-way linking between rows and elements.
- Offline and portable. Windows 10/11 x64, nothing to install besides the package (installer or portable zip). Linux (x64, arm64) and macOS (arm64, x64) command-line converters and the Data Viewer are in Releases (see DDC_LINUX_Converters).
Downloads: DDC_WINDOWS_Converters/ (portable, ready to run) and the
Releases page (installers and packages).
- Converters
- Screenshots
- Quick start
- Command line
- Batch processing and automation
- DDC Data Viewer
- Free tools: data check, model diff, BCF issues, quantity take-off, Power BI and Excel
- n8n workflows, notebooks and AI agents
- Supported scope and notes
- Repository layout
- Licensing
- Trademarks
| Package | Version | Reads | Writes | Interface |
|---|---|---|---|---|
| DDC RVT Converter | 2.0 | .rvt, .rfa saved by Revit 2016–2027 |
GLB (default), glTF, OBJ, IFC4, element table (elements.xlsx, elements.csv: category, family, type, level, area, volume, length, parameters), saved properties as JSONL; the desktop app also writes CSV tables and SQLite |
Desktop app + RVTconverter.exe CLI |
| DDC RVT to IFC | 2.0 | .rvt, .rfa |
IFC4 with property sets, quantities, classification, materials; profiles full, coordination, geometry |
Desktop app (same command line as RVT Converter) |
| DDC IFC to Excel | 2.0 | IFC2x3 / IFC4 STEP files, .ifczip |
drawing.xlsx (objects, properties, quantities), data.jsonl, data.sqlite, result.json |
Desktop app + command line |
| DDC CAD Drawing to Excel | 2.0 | .dwg drawings, R13–2018 format versions |
.xlsx (Entities, Summary, Layers, Blocks), .csv, .jsonl, .dxf, .svg, report.json |
Desktop app + dwg2excel.exe CLI |
| DDC Data Viewer | 2.0 | .xlsx, .csv, .jsonl, .parquet tables + .glb / .dae geometry |
filtered views to XLSX / CSV | Desktop app (free) |
Every geometry node written by the RVT Converter keeps the native element id, so tables and 3D can be
joined by ElementId. All packages run fully offline on Windows 10/11 x64 and need no Excel
and no Python installation. Linux and macOS command-line builds are in the v2026.10.1 release.
All screenshots below come from real runs of the packages in the current release. They use open
Revit sample models (MIT licence), the viewer's synthetic sample building and the open IFC sample in Sample_Projects/.
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| DDC RVT Converter — three Revit models converted; the result folder is listed per file. | DDC RVT to IFC — length unit, coordinate origin and the other IFC settings in More options. |
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| DDC Data Viewer — a filter on Structural Columns highlights the linked elements in 3D; the summary panel sums area, volume and length. | DDC IFC to Excel — drawing.xlsx of the open Duplex IFC sample, grouped by IFC class (333 objects, 23 classes). |
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Command line — RVTconverter.exe writes GLB, IFC4, the element table and reports, and prints a status summary. |
Dark theme — the Data Viewer in the dark theme, with the interface language switch at the top right. |
- Open the 2.0.2 release (RVT Converter, RVT to IFC) or the Releases page (other packages)
and download the package you need — a
*-Setup.exe(per-user installer) or a*-portable.zip. - Verify the download against
SHA256SUMS.txtfrom the same release:Get-FileHash .\DDC-RVT-Converter-*-portable.zip -Algorithm SHA256
- Unzip the portable package to a folder of your choice, for example
C:\DDC\RVT-Converter\,C:\DDC\IFC-to-Excel\,C:\DDC\DWG-to-Excel\. Keep the folder structure as it is. - Start the desktop app (
RVT Converter.exe,IFC to Excel.exe,DWG to Excel.exe), drop files or folders into the window and press Convert — or use the command line below. - Open the result in Excel, Python/pandas or the DDC Data Viewer.
Windows SmartScreen may ask for confirmation on first start of a new download; check the SHA-256 sum from the release.
The examples below were run with the binaries of the current release. Paths assume the portable
packages were unpacked to C:\DDC\.
# GLB + reports into "Project.converted" next to the input (existing folders are never overwritten)
C:\DDC\RVT-Converter\cli\RVTconverter.exe "C:\Models\Project.rvt"
# choose the output folder, add saved properties (JSONL) and an IFC4 file
C:\DDC\RVT-Converter\cli\RVTconverter.exe "C:\Models\Project.rvt" -o "C:\Out\Project" --properties --ifc
# IFC for coordination: millimetres, survey point origin, only doors and windows
C:\DDC\RVT-Converter\cli\RVTconverter.exe "C:\Models\Project.rvt" --ifc --ifc-profile coordination `
--ifc-units mm --ifc-origin survey-point --ifc-categories Doors,Windows
# additional geometry formats
C:\DDC\RVT-Converter\cli\RVTconverter.exe "C:\Models\Family.rfa" --gltf --obj| Output | When | Content |
|---|---|---|
native_graph.glb |
always | 3D meshes, one node per element, named by ElementId |
summary.json, report.json |
always | status, counts, omissions and per-element diagnostics |
properties.jsonl, property_scopes.jsonl (+ manifests) |
--properties |
saved parameters per element (one JSON object per line) |
native_graph.ifc, ifc.manifest.json, ifc.settings.json |
--ifc |
IFC4 (tessellated geometry, property and quantity sets) |
native_graph.gltf + .bin, native_graph.obj + .mtl |
--gltf, --obj |
same geometry as GLB; OBJ in metres, Y-up |
Exit codes: 0 written without reported gaps, 2 written with reported gaps (or invalid arguments),
1 conversion or I/O failure. Run RVTconverter.exe --help for all IFC options
(--ifc-config, --ifc-phase, --ifc-design-options, --ifc-exclude-categories, …).
The command line of the portable package:
C:\DDC\IFC-to-Excel\runtime\python.exe C:\DDC\IFC-to-Excel\sources\ifc-excel\converter.py `
"C:\Models\Building.ifc" --output "C:\Out\Building"The command prints one JSON line ("status": "CONVERTED", "CONVERTED_WITH_LIMITS" or "FAILED")
and creates a new sub-folder with drawing.xlsx, data.jsonl, data.sqlite and result.json.
.ifczip files are accepted directly.
# one or more drawings; a new sub-folder per drawing
C:\DDC\DWG-to-Excel\cli\dwg2excel.exe "C:\Drawings\Plan.dwg" -o "C:\Out"
# a whole folder: tables only, one JSON line per file for scripts
$dwg = (Get-ChildItem C:\Drawings -Filter *.dwg).FullName
C:\DDC\DWG-to-Excel\cli\dwg2excel.exe @dwg -o C:\Out --no-dxf --no-svg --jsonEach drawing folder contains <name>.xlsx, <name>.csv, <name>.jsonl, <name>.dxf, <name>.svg,
report.json and REPORT.txt. The console line reports how many records were decoded, skipped or are
of an unsupported type. Other options: --timeout, --memory-limit-mb,
--language en|ru, --version.
PowerShell — every RVT file in a folder tree:
$exe = "C:\DDC\RVT-Converter\cli\RVTconverter.exe"
Get-ChildItem "C:\Projects" -Recurse -Include *.rvt | ForEach-Object {
& $exe $_.FullName -o (Join-Path "C:\Out" $_.BaseName) --properties --ifc
"{0}: exit {1}" -f $_.Name, $LASTEXITCODE
}Python — load RVT properties and IFC tables with pandas:
import json, subprocess, pandas as pd
subprocess.run([r"C:\DDC\RVT-Converter\cli\RVTconverter.exe", r"C:\Models\Project.rvt",
"-o", r"C:\Out\Project", "--properties"], check=False)
rows = [json.loads(line) for line in open(r"C:\Out\Project\properties.jsonl", encoding="utf-8")]
print(len(rows), "property records")
objects = pd.read_excel(r"C:\Out\Building\Building-<id>\drawing.xlsx", sheet_name="Objects")
print(objects.groupby("Category").size().sort_values(ascending=False))DWG in CI or bots: dwg2excel.exe --json prints one JSON line per drawing; parse it to collect
status, output folder and decode statistics.
A free desktop viewer for the converter output: virtualised grid for 100k+ rows, search, filters,
grouping with sums, column chooser, export of the current view to XLSX/CSV and a 3D panel that links
rows and elements both ways (GLB or DAE). English, German and Russian; light and dark theme.
Download DDC-Data-Viewer-<version>-Setup.exe or the portable zip from the release.
ddc-tools/ (Python 3.9+, MIT, offline) works on the tables the converters write
(XLSX, CSV, JSONL, SQLite, JSON):
ddc checkvalidates an export against YAML rules (required parameters, regex, uniqueness, ranges, allowed values) and writes a traffic-light XLSX with ElementId / GlobalId details, a JSON report and an exit code for CI.ddc diffcompares two exports of a model (RVT, IFC or DWG converter output): added / removed / modified elements, old to new values per property and quantity, changelog XLSX, JSON, a GLB coloured by change status and an exit code for CI.ddc bcfwrites the findings ofddc checkandddc diffas BCF 2.1 / 3.0 issue files (components by IFC GlobalId) and tabulates any BCF file into XLSX. BCF is an open buildingSMART format; no certification is claimed.ddc qtosums count, length, area and volume by category, type and level into a formatted XLSX and warns about missing or zero quantities.ddc-tools/powerbi/andddc-tools/excel/: Power Query scripts and an Excel workbook that read a whole export folder, no Python needed (steps).
pip install ./ddc-tools
ddc check Project.converted --rules ddc-tools/examples/rules_basic.yaml --xlsx check.xlsx
ddc qto Project.converted --xlsx qto.xlsx
ddc diff Model_v1.converted Model_v2.converted --xlsx changes.xlsx --glb diff.glb --bcf changes.bcfExcel and Power BI are trademarks of Microsoft Corporation, used only to say what the files work with.
DDC_n8n_Workflows&Pipelines/— nine n8n workflows (conversion, batch validation, AI classification, cost and CO2 estimation, QTO reports).DDC_in_additon/DDC_python_pipelines/— Jupyter notebooks for conversion, batch processing and analytics.
Setup: the workflows and notebooks call the converters in
DDC_WINDOWS_Converters/throughddc convert/ddc table(free toolddc-tools/), which builds the flat table (<name>_rvt.xlsx, sheetProject_Data:ID,Category,Type Name,Level,Volume, ...) fromproperties.jsonl/ IFC / DWG output; 3D geometry is GLB. One-time setup:pip install ddc-tools\. TheREADME.mdnext to the workflows and notebooks says what was checked and what is not covered (for example: the AI steps of n8n 5-7 need your credentials; schedules and sheet PDFs have no equivalent; Revit quantities come from IFC quantities or the GLB mesh).
AI_AGENTS_INSTRUCTIONS/— ready context for coding agents (AI coding agents) with the current command lines. Open the repository in your agent and ask, for example, "convert every .rvt in C:\Projects to IFC and summarise the reports".- DDC Skills for AI agents — ready-made automations for construction data.
- RVT: textures are not exported; IFC export writes tessellated IFC4. Elements that cannot be represented are listed in the run report.
- IFC: IFC2x3 and IFC4 STEP files and
.ifczip; IFCXML is not supported. Original records always remain indata.jsonl/data.sqlite. - DWG: drawings R13–2018. Some object types (for example certain tables, multileaders, 3D solids,
images) are listed as unsupported in
report.jsoninstead of being exported incorrectly. - Platforms: Windows 10/11 x64. Linux (x64, arm64) and macOS (arm64, x64): command-line converters and Data Viewer, see Releases.
Bug reports with a small example file are very welcome — please use GitHub Issues and do not attach confidential models.
| Path | Content |
|---|---|
docs/ |
release notes, screenshots |
ddc-tools/ |
free data check, model diff, BCF issues, quantity take-off, Power BI and Excel kit |
DDC_n8n_Workflows&Pipelines/ |
n8n workflow JSON files |
DDC_in_additon/ |
notebooks, presentations, images |
AI_AGENTS_INSTRUCTIONS/ |
instructions for AI coding agents |
DDC_WINDOWS_Converters/ |
portable Windows converters (RVT, RVT-to-IFC, IFC to Excel, CAD Drawing to Excel, Data Viewer), licence texts and the Excel → Revit add-in documentation; installers are on the Releases page |
DDC_LINUX_Converters/ |
CWICR data packages, Qdrant packaging and telemetry dashboard |
Sample_Projects/ |
open IFC sample files |
- Workflows, notebooks, scripts, AI instructions, documentation and
ddc-tools— MIT License. Open source, commercial use allowed. - DDC converters (binary packages on Releases and in
DDC_WINDOWS_Converters//DDC_LINUX_Converters/) — proprietary software, free for non-commercial use only. Commercial use requires a licence on request: [email protected]. Terms: EULA, LICENSE-PROPRIETARY and NOTICE. Third-party open-source components and their licences are listed inlicenses/inside each package. - The MIT licence of
ddc-toolsdoes not extend to the converters it calls.
Commercial use means any use by or on behalf of a business, company, self-employed professional, public authority or other organisation (including its employees or contractors); in paid work or services, including processing files for clients; in a project that generates or is intended to generate revenue; or inside a product, service, pipeline or SaaS offering made available to others. Redistribution, OEM and SaaS integration are covered too. Non-commercial use means personal learning and hobby use, academic research, teaching and study by students and instructors, and evaluation by non-profit organisations, in each case without payment, revenue or business purpose.
Security reports: see SECURITY.md. Patents, trademarks and export control: PATENTS.md, TRADEMARK.md, EXPORT-COMPLIANCE.md.
DataDrivenConstruction helps construction, engineering and technology companies automate CAD/BIM data processing and build open ETL pipelines — workshops, consulting and prototypes on your real data. Contact [email protected] or visit datadrivenconstruction.io.
If these tools are useful to you, please star the repository to get notified about new releases.
Autodesk and Revit are trademarks of Autodesk, Inc. DataDrivenConstruction is independent software and is not affiliated with or endorsed by Autodesk, Inc. RVT, RFA, DWG, DXF and IFC are file-format names used only to say which files are read.
