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Convert 123 to xlw

  1. Download and install the latest version of Filestar.

  2. Right click on one or more 123 file(s) on your desktop and select Convert with Filestar.

  3. Type convert to xlw in the search box.

  4. Press Convert.

Or let an AI agent do it: filestarcli -i file.123 -c "convert to xlw" (how).

Let your AI agent convert 123 to XLW

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine. It works on Windows, macOS only.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the 123 files in my Downloads folder to XLW”

Or run it yourself:

filestarcli -i file.123 -c "convert to xlw"

Runs on your computer, so your files stay on it. Works on Windows and macOS. 50 free conversions with the npm install, no account needed.

Can my AI agent convert 123 to XLW?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.123 -c "convert to xlw" on your computer, so your files stay on it.

Using Filestar With AI Agents · Download SKILL.md

What is the difference between .123 and .xlw?

Name
Lotus 1-2-3 Spreadsheet
Excel Workspace File
Extension
.123
.xlw
Format
Binary
Binary
Category
Spreadsheet
Spreadsheet
Developer
IBM
Microsoft
Description
The 123 file format is a proprietary file format developed by the Lotus Development Corporation for use with its Lotus 1-2-3 spreadsheet software. It is a binary file format, which means that it stores data in a binary format that is not easily readable by humans.
Workspace file saved by Microsoft Excel, a program used to create spreadsheets; contains the screen locations of one or more workbooks, as well as references to the workbook files; used to restore the layout when working simultaneously on multiple workbooks.
MIME Type
application/vnd.lotus-1-2-3
application/vnd.ms-works
Sample
sample.123
Wikipedia
.123 on Wikipedia

Convert 123 To Xlw Today

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