Excel to CSV
DataConvert Excel files to CSV format with custom delimiter options. Batch convert multiple sheets. Pure browser processing with SheetJS.
About Excel to CSV
This Excel to CSV converter uses SheetJS to transform xlsx and xls files into CSV text locally. The conversion follows RFC 4180, correctly handling fields with commas, quotes, and newlines via double-quote wrapping. It supports custom delimiters (comma, tab, semicolon, pipe) and batch export of multiple worksheets.
How to Use
- Open the Excel to CSV tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- Database import — Convert Excel data to CSV for MySQL or PostgreSQL LOAD DATA bulk import commands.
- Data analysis import — Transform Excel data to CSV for direct loading by Python pandas read_csv or R language.
- Cross-system data exchange — Convert Excel reports to CSV as a universal data exchange intermediate format between systems.
- Batch multi-sheet export — Export multi-worksheet Excel files as independent CSV files, one per sheet.
- Version-control friendly — Convert Excel config data to CSV text format for easy Git diff tracking of data changes.
FAQ
How are special characters in CSV handled?
Following RFC 4180, field values containing commas, quotes, or newlines are wrapped in double quotes; quotes within fields are escaped as two consecutive double quotes.
Can I customize the delimiter?
Yes. Besides the default comma, tab (TSV), semicolon, and pipe are supported, adapting to different regional and system CSV conventions.
How are multiple worksheets exported?
The tool lists all worksheets; you can select a specific sheet or export all sheets one by one as independent CSV files.
What is the difference between CSV and Excel?
CSV is plain text preserving only data values without formatting, formulas, or charts; Excel is binary preserving full formatting. CSV is lighter and more universal.
Are files uploaded?
No. All parsing and conversion run locally via SheetJS; files never leave your device, safe for sensitive reports.
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