About Excel to CSV
Extract tabular data from Microsoft Excel (.xlsx / .xls) workbooks and convert them into clean standard CSV or TSV files 100% in-browser with zero cloud uploads.
Key Capabilities & Features
- Extracts cell data and shared string tables directly from .xlsx binary files in-browser
- Converts Excel workbooks into universal comma-separated or tab-separated text files
- Full client-side security: confidential financial spreadsheets never leave your device
- Live interactive table inspection with Quick Column Stats ribbon
- Formula evaluator bar supporting =SUM(), =AVG(), =MEDIAN(), and =UNIQUE()
- Multi-format export: CSV, TSV, JSON, SQL INSERT, and Markdown
- Compatible with Excel workbooks from Excel 2007 through Microsoft 365
How to Use Excel to CSV
1
Upload .XLSX File
Click 'Open Excel (.xlsx)' and select your spreadsheet workbook.
2
Review Extracted Data
Inspect your rows, headers, and values in the interactive table grid.
3
Export CSV
Click 'Export CSV' to download your converted RFC 4180 spreadsheet file.
Privacy & In-Browser Execution Guarantee
100% client-side privacy. All calculations, parsing, and charting execute locally in your browser with zero server uploads.
Frequently Asked Questions
Are large Excel workbooks supported?
Yes! Our in-browser zip parser handles multi-megabyte Excel files directly in your browser memory.
Does my confidential corporate data get sent to an external server?
Never. All decompression, XML parsing, and string extraction happen strictly inside your browser.
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