Data & spreadsheets converter
Convert XLSX to CSV online for free
Drop your file here
or choose a file from your device
Input: XLSX · Output: CSV
Export data from an Excel XLSX spreadsheet as a CSV for import into databases, BI tools, scripts and APIs that expect plain comma-separated values.
About this XLSX to CSV conversion
What to select
Select an XLSX file to export its first sheet as CSV locally. Formulas export as their last computed values.
What you receive
Table data is exported as CSV for download without sending the source file to a server.
Private processing
ConvertME runs this conversion in the browser on your device. Selected files are not transferred to a processing server, and downloads are created locally after conversion.
Format details
- Input
- XLSX
- Output
- CSV
- Processing
- In browser
- Cost
- Free
When to use this converter
Use this page when you need a focused XLSX to CSV conversion without installing desktop software or sending the source file to a remote conversion queue.
Practical use cases
- Export data from an Excel XLSX spreadsheet as a CSV for import into databases, BI tools, scripts and APIs that expect plain comma-separated values.
- Select an XLSX file to export its first sheet as CSV locally. Formulas export as their last computed values.
- Table data is exported as CSV for download without sending the source file to a server.
Best practices before downloading
- Start from the cleanest available XLSX file because conversion cannot recover missing detail or corrupted data.
- Open the downloaded CSV file before deleting the original, especially for professional or archival work.
- Use a current browser and avoid closing the tab while the local conversion engine is running.
Common issues to check
- Password-protected, corrupted or unusually large XLSX files may fail in the browser.
- Metadata, embedded scripts, advanced styling or hidden document features may not be preserved in the CSV output.
- Review the result before using it in legal, medical, financial, regulatory or production workflows.
XLSX vs CSV: what changes
The converter changes the container or export format. It does not claim to improve the source file beyond what the browser can read and render.
- Source format
- XLSX — Excel workbook, may have multiple sheets, formulas and styles
- Download format
- CSV — CSV of first-sheet values; no formulas, styles or multi-sheet
- Conversion type
- Spreadsheet → Universal tabular text
- Size impact
- CSV is typically much smaller than XLSX; only first-sheet values exported
- Privacy model
- Browser-based local processing with no file upload to ConvertME.
Related searches this page answers
How it works
Convert XLSX in three steps
Choose a converter
Pick the exact input and output format you need.
Drop your file
Select a local file. Nothing is uploaded to our servers.
Download the result
Conversion finishes in your browser and exports locally.
FAQ
XLSX to CSV questions
How do I convert XLSX to CSV?
Choose a XLSX file, select Convert now and download the resulting CSV file. Processing happens in your browser.
Is this XLSX to CSV converter private?
Yes. Your selected file is processed locally and is not uploaded to ConvertME.
Do I need an account to convert XLSX files?
No. The converter is free to use without sign-up or watermarks.
What will my CSV download contain?
Table data is exported as CSV for download without sending the source file to a server.