Convert Excel spreadsheets to CSV. Preview data, select sheets, edit columns. Free, no upload. By WeLuvTools.
What is XLSX to CSV Converter — Convert Excel to CSV Online Free?
WeLuvTools XLSX to CSV Converter reads Microsoft Excel spreadsheets (.xlsx, .xls) entirely in your browser using the SheetJS library — your file is never uploaded to any server.
About XLSX to CSV Converter — Convert Excel to CSV Online Free
WeLuvTools XLSX to CSV Converter reads Microsoft Excel spreadsheets (.xlsx, .xls) entirely in your browser using the SheetJS library — your file is never uploaded to any server. Select which sheet to convert, preview the data before downloading, and export as a clean .csv file. CSV is a universal format supported by every database, programming language, and data analysis tool. WeLuvTools makes Excel to CSV conversion instant, private, and free.
100% Private
Files stay on your device.
Super Fast
Results in just a few seconds.
Secure & Safe
No account or upload needed.
Practical Limits
Capacity depends on your device.
Practical scenarios
Use cases
Common ways people get more value from this tool.
Use case 1
Converting Excel reports to CSV for import into MySQL, PostgreSQL, or SQLite databases
Use case 2
Exporting Excel data to CSV for analysis in Python pandas or R
Use case 3
Converting Excel sheets to CSV for import into Salesforce, HubSpot, or other CRMs
Use case 4
Preparing Excel exports from accounting software (QuickBooks, Xero) as CSV for processing
Use case 5
Converting Excel data for upload into Google Sheets or Airtable
Types & formats
Single sheet to CSV
Converts one selected Excel sheet to a single .csv file
Multi-sheet support
Select and convert any sheet from multi-tab Excel workbooks
Supports .xlsx and .xls
Works with Excel 2007+ (.xlsx) and older Excel format (.xls)
The WeLuvTools difference
Why choose WeLuvTools
Benefit 1
No upload — Excel file is read locally in your browser using SheetJS
Benefit 2
Data preview before download — verify rows and columns are correct
Benefit 3
Multi-sheet support with a sheet selector dropdown
Benefit 4
WeLuvTools XLSX to CSV Converter supports both .xlsx and .xls formats
Benefit 5
Free to use without creating an account; practical capacity depends on your browser and device.