XLSX to CSV converter
Convert XLSX to CSV — free, private, no upload
Extract the data from any Excel spreadsheet as a clean CSV file — without uploading it anywhere. The converter below parses your workbook locally with SheetJS, so financial data and customer lists never leave your device.
How it works
1
Drop your XLSX
Drag and drop or click to select your Excel file. Nothing is uploaded.
2
Parse in browser
SheetJS reads the workbook entirely inside your browser tab.
3
Download your CSV
Save the CSV locally. No watermark, no account, no waiting.
Note about formulas
Formulas are read as their computed values, not the formula text — the CSV contains the numbers you see in Excel, not the expressions behind them.
Popular use cases
Bulk database import
Produce a CSV your database or CRM import wizard accepts directly.
Data pipeline entry
Feed spreadsheet data into scripts, ETL jobs, and analysis notebooks.
Version-control friendly diffs
Track spreadsheet changes as plain-text CSV diffs in Git.
Frequently asked questions
- Is XLSX to CSV free on Convertoza?
- Yes, completely free with no watermark or account required.
- Are Excel formulas preserved in the CSV?
- Formulas are exported as their computed values, not the formula syntax.
- Is my spreadsheet uploaded to a server?
- No. Convertoza uses SheetJS to parse your spreadsheet entirely in your browser. Nothing is uploaded.
- Can I convert a multi-sheet Excel file?
- Currently Convertoza exports the first sheet only. Multi-sheet export is planned for a future update.