Convert XLSX to CSV online — free
Need your Excel data as plain CSV for an import, script, or database? Convert it in seconds.
- No watermarks
- Works on mobile
- First fix free, no signup
FixTheFile AI Studio- 1Upload
- 2Pick a fix
- 3Download
- 1Upload
- 2Pick a fix
- 3Download
Drop any file. AI picks the fix.
Images, audio, video, PDF, Word and ZIP — up to 500MB. Or click anywhere to browse.
image → upscale · audio → clean noise · video → extract audio · pdf → text · zip → repair
How it works
How to convert XLSX to CSV
Upload your .xlsx file
Any Excel spreadsheet, up to 500MB.
Select "Convert to CSV"
FixTheFile reads the first sheet and writes a CSV.
Download your CSV
Ready to import anywhere CSV is accepted.
Why FixTheFile
Simple XLSX to CSV conversion
No Microsoft Excel needed
Works entirely in your browser.
Plain, universal CSV output
Import into databases, scripts, or other spreadsheet apps.
Fast
Most spreadsheets convert in a few seconds.
Free to try
No signup for your first conversion.
Private
Spreadsheet data is never shared.
Handles formulas as values
Converts calculated results, not raw formulas.
How do I convert Excel to CSV for free?+
Upload your .xlsx to FixTheFile and select Convert to CSV.
Which sheet gets converted?+
The first (active) sheet in the workbook.
Are formulas included?+
Calculated values are exported, not the formulas themselves.
Does formatting carry over?+
No — CSV is plain text, so colors, fonts, and merged cells are not preserved.
Can I convert older .xls files?+
Currently .xlsx only. Save .xls files as .xlsx in Excel first.
Ready to get started?
No software needed. Works on any device. First fix is free.
Convert XLSX to CSV free