Download and install the latest version of Filestar.
Right click on one or more Numbers file(s) on your desktop and select Convert with Filestar.
Type convert to csv in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.numbers -c "convert to csv" (how).
Let your AI agent convert Numbers Spreadsheet ('09) to CSV
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.
“Convert the Numbers Spreadsheet ('09) files in my Downloads folder to CSV”
Or run it yourself:
filestarcli -i file.numbers -c "convert to csv"
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 Numbers Spreadsheet ('09) to CSV?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.numbers -c "convert to csv" on your computer, so your files stay on it.
A Numbers '09 spreadsheet is a document from Apple's iWork '09 Numbers, stored as XML in a ZIP file, unlike the Protocol Buffers format of Numbers since 2013.
A CSV file is a comma separated values file commonly used by spreadsheet programs such as Microsoft Excel or OpenOffice Calc. It contains plain text data sets separated by commas with each new line in the CSV file representing a new database row and each database row consisting of one or more fields separated by a comma. CSV files are often opened by spreadsheet programs to be organized into cells or used for transferring data between databases.
