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Excel (XLSX) to CSV

Save any worksheet from an Excel file as a clean CSV.

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Files stay on your device. How this works

How to convert Excel to CSV

  1. Choose an Excel (.xlsx or .xls) or OpenDocument (.ods) file.
  2. Pick the sheet, the delimiter and how values are written, and check the preview.
  3. Select Convert to CSV and download the file.

Good to know

  • A CSV file holds one sheet. To save another sheet, pick it and convert again.
  • "As displayed" writes what you see in Excel, so 00123 keeps its zeros and dates keep their format. "Raw values" writes plain numbers and dates as YYYY-MM-DD.
  • Formulas are saved as the results stored in the file. Formatting, charts, comments and pictures aren't part of a CSV.
  • "Excel-compatible" (on by default) adds a UTF-8 marker so Excel shows accents correctly when you open the CSV.
  • Password-protected workbooks can't be opened.

Frequently asked questions

Is my file uploaded?
No. Your browser reads the file on your device. It is not sent to Filecon's servers, and nothing is saved after you close the page.
Which delimiter should I choose?
Comma works in most apps. If your Excel uses a comma for decimals (common in Europe), choose semicolon so the columns open correctly.
What does formula injection protection do?
A spreadsheet app can treat a value starting with =, +, - or @ as a formula. With this option on, those values (other than plain numbers) start with an apostrophe so they are shown as text instead of run.

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