Convert

Excel to CSV

Convert an Excel workbook to CSV. CSV is plain text, which is what makes it portable and also what makes it lossy in a structural sense: formulas collapse to their computed values, and formatting, charts, and multiple sheets do not survive. Runs on your own Vistalyth Tools instance. Files never reach a third party.

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Features

  • Formulas exported as their computed values
  • Delimiter and encoding control for imports that are fussy about both
  • Sheet selection on multi-sheet workbooks
  • Your Excel files are processed on your own server and never uploaded anywhere

What you can do

  • Feed spreadsheet data into a script, a database import, or a data pipeline
  • Hand data to someone without Excel, or to a tool that only reads CSV
  • Diff or version-control tabular data as text

Self-hosted. Your files never leave your network.

Vistalyth Tools runs entirely on your own infrastructure. Files processed with Excel to CSV are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.

Frequently asked questions

What happens to multiple sheets?
CSV holds one table, so each sheet becomes its own file. Pick a single sheet if you want a single output.
Are my formulas preserved?
Their results are. CSV has no concept of a formula, so what lands is the value each cell displayed.
Will accented or non-Latin characters survive?
Yes, the output is UTF-8. If a downstream tool mangles them it is reading the file as something else, which is normally fixable by choosing the encoding at import.

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