XLSX to CSV Converter
Convert Excel files to CSV. All sheets supported. 100% client-side.
About XLSX to CSV Converter
The XLSX to CSV converter turns Excel workbooks into plain CSV files. Upload an .xlsx or .xls file, pick the sheet you want, and download the data as comma-separated values.
CSV is the format most databases, scripts, and data tools expect, so this conversion is a common first step before importing a spreadsheet elsewhere. The file is parsed entirely in your browser, which means your data stays on your device and is never uploaded to a server.
Frequently asked questions
- Can it convert workbooks with multiple sheets?
- Yes. All sheets in the workbook are supported, and you choose which one to export as CSV.
- What happens to formulas?
- Formulas are exported as their calculated values, since CSV is a plain text format and cannot store formula logic.
- Does it keep cell formatting?
- No. CSV holds only raw values, so colors, fonts, and number formatting are not carried over.