CA1 Converter

Extract text from architecture and engineering files (CA1)

Select File
Drop or upload your .CA1 file

Online File Converter

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How to extract text from your CA1 file

Click the "Select File" button above, and choose your CA1 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert CA1 to another file type

To convert CA1 design files to another format, you need Chief Architect or other Cad software.

Convert a file to CA1

To convert other file formats to the "Legacy Project File" file type, you need software like Chief Architect or a similar tool.

About CA1 files

The .ca1 file extension is primarily associated with legacy 3D Home Architect projects (originally by Broderbund, now part of Chief Architect). These files contain architectural floor plans, 3D home models, and interior design layouts created in older versions of home design software. A major catch for users is proprietary lock-in: modern versions of Chief Architect Premier (X8 and later) often drop support for these legacy file formats (pre-version 10 or 3D Home Architect 4.0), making them impossible to open without intermediate conversion steps or outdated software.

Alternatively, a .ca1 file may be a CALS Type 1 Raster Image. These are high-resolution, 1-bit (black and white) bitmap images originally developed by the US Department of Defense for digitizing technical manuals and engineering drawings. While efficient for storage, they are not supported by standard web browsers or default image viewers like Windows Photos.

Conversion Advice:

For Home Design: If you have access to the original software, export the plan to DWG or DXF for use in modern CAD tools like AutoCAD. If the file is orphaned, your best bet is a legacy viewer or converting the visual output to PDF for archiving.
For CALS Images: These should be converted to TIFF (for archiving), PNG (for lossless web viewing), or PDF (for documents). Professional image converters like XnView handle this format easily.

Convert.Guru analyzes your CA1 file, detects the exact format, and lets you read the text inside.

Users also converted CA, PLAN, RBE, GSM and CA0 files.

FAQ

If you want to convert CA1 file to , you can use Chief Architect or similar software from the "3D Home Design Project" category. In the File menu, look for Save As… or Export….

To convert files to CA1, try Chief Architect or another comparable tool in the "3D Home Design Project" category.

The CA1 Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CA1 converter.