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Excel to CSV
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2 files, max 5M each
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Tool Description
Excel to CSV is a free daily-quota online Excel to CSV converter — no installation, no sign-up, ready to use. Just upload a .xlsx or .xls file and it converts to the universal CSV format in one click, using comma as the delimiter and UTF-8 encoding, preserving all your data as-is. It supports batch conversion and all platforms, and all processing happens entirely in your browser, with 100% privacy — your files are never uploaded to any server. Whether you are importing/exporting data, exchanging between platforms, or processing in batch, it handles everything with ease — results rival professional data-processing software. (Note: "free quota" refers to the daily free usage count, not unlimited use; for high-frequency or professional needs, you can unlock more by becoming a member)
How to Use
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Add Files
Click the upload area or drag and drop Excel files into the upload box. .xlsx, .xls, and .xlsm formats are supported, and you can add multiple files at once.
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Start Processing
Click the "Start Processing" button — the tool automatically parses the Excel file and converts it to CSV format.
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Review Results
After conversion, check the status of each file. Failed items show an error message for easy troubleshooting.
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Download
Click "Download" after conversion to get the CSV file; multiple files support packaged download as a ZIP.
Use Cases
- Data Import/Export: Convert Excel data to CSV format for easy import into databases, data analysis tools, or other systems
- Cross-Platform Compatibility: CSV is a universal plain text format supported by virtually all software, making it easy to exchange tabular data between different systems
- Batch Data Processing: Convert multiple Excel files to CSV in batch for automated data processing with scripts or programs
- System Integration: Provide standard CSV data to systems like ERP and CRM for easy data handoff and synchronization
Key Advantages
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Daily Free Quota
Get free usage count every day, so light everyday conversions cost nothing and you can experience the full features without paying.
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Privacy & Security
All conversions are done entirely in your browser — files are never uploaded to any server and your data stays on your device.
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Format Compatibility
Supports .xlsx, .xls, and .xlsm mainstream Excel formats, covering virtually every type used in daily work.
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Batch Processing
Supports batch upload and conversion of multiple files, with individual or packaged download for greater efficiency.
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Easy to Use
No installation, no sign-up, and ready to use — complete the conversion in three steps with no learning curve.
Excel Format Reference
The tool supports multiple Excel formats, and spreadsheet files of different versions are read and converted correctly. Here is a quick reference.
| Excel Format | Version | Compatibility |
|---|---|---|
| .xlsx | Excel 2007 and later | Supported |
| .xls | Excel 97-2003 legacy format | Supported |
| .xlsm | Macro-enabled workbook | Supported |
FAQ
It is an online tool that converts Excel spreadsheets into CSV format. After uploading a .xlsx or .xls file, the tool automatically parses the table and produces universal CSV text — all processing is done locally in your browser.
Upload an Excel file, click "Start Processing," and download the CSV file. Batch upload is supported, and multiple files can be downloaded individually or as a ZIP package.
Mainstream formats are supported: .xlsx (Excel 2007+), .xls (Excel 97-2003), and .xlsm (macro-enabled workbook), covering virtually all Excel file types used in daily work.
Data from all sheets is merged sequentially into a single CSV file. Each sheet's data is arranged in order; if you only need a specific sheet, remove the unwanted sheets in Excel before uploading.
Batch upload and conversion of multiple files is supported. The exact quantity limit depends on your membership tier — please check the membership benefits page; after conversion, files can be downloaded individually or as a package.
Very fast. Conversion is done in real time in your browser and usually finishes within seconds, with no queue waiting for a server.
Safe, no leaks. All conversion processing is done entirely in your browser — files are never uploaded to any server and your data stays on your device.
We give you free usage count every day, so daily use costs nothing. Every user gets a daily free quota that easily covers light needs; when you require higher processing volume, becoming a member unlocks more benefits to handle any scenario with ease.
Yes. The tool works on mainstream browsers, so you can upload and convert normally on phones and tablets without installing any app.
Output files use UTF-8 encoding with a BOM header, which modern Excel and WPS can recognize. If garbled text persists, use Excel's "Data → From Text/CSV" import feature and manually select UTF-8 encoding.
CSV is a plain text format that only preserves cell display values. Formatting (fonts, colors, borders, etc.), formulas, charts, and images are not kept, and formula cells are converted to their calculated values; use Excel or PDF format if you need complete formatting.
They work in opposite directions. Excel to CSV reduces a formatted spreadsheet to a universal plain-text format for program consumption and data handoff; CSV to Excel turns plain text into an editable .xlsx file. Choose the tool that fits your need.
Content last updated：2026-08-07
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