Convert XLSX to CSV
XLSX to CSV converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.
CSV is the lowest common denominator of data: plain-text rows that every database, script, and app can import. Converting XLSX to CSV exports the sheet's values only — formulas become their results, and formatting, charts, and extra sheets are left behind. Check dates and decimals afterward; regional settings love surprises.
Drop any file here or click to browse
All file types supported
About formats
XLSX
XLSX is the Microsoft Excel spreadsheet format introduced with Office 2007, based on the Office Open XML standard. XLSX stores worksheets containing rows, columns, formulas, charts, and styling in a ZIP archive of XML parts. XLSX is the most widely used spreadsheet format and is supported by Microsoft Excel, LibreOffice Calc, Google Sheets, and Apple Numbers.
- Developer
- Microsoft
- Initial release
- 2007
- Compression
- Lossless
- Color depth
- up to 24-bit
- Transparency
- Yes
- Animation
- No
Best for
- Financial and data analysis
- Storing formulas and charts
- Business spreadsheet sharing
- Collaborative data in Excel or Google Sheets
- Formatted tabular data with styling
Pros
- +Standard Excel spreadsheet format
- +Stores formulas, charts, and styling
- +ZIP-based OOXML open standard
- +Supported by Excel, Google Sheets, LibreOffice Calc, and Numbers
Cons
- −Not ideal for large pure-data interchange
- −Complex structure can be slow to parse
- −Formatting may differ across suites
- −Overkill for plain data tables
CSV
CSV (Comma-Separated Values) is a plain-text format for storing tabular data where each row is a record and fields are separated by commas. CSV is the simplest and most universal format for exchanging tabular data between spreadsheets, databases, and statistical software. CSV files are supported by virtually every spreadsheet and data-processing tool.
- Developer
- RFC 4180 (IETF)
- Initial release
- 2005 (RFC)
- Compression
- Uncompressed
- Color depth
- 1-bit
- Transparency
- No
- Animation
- No
Best for
- Exchanging tabular data between tools
- Importing data into databases
- Statistical software data input
- Simple data export and backup
- Universal spreadsheet data interchange
Pros
- +Simplest and most universal tabular format
- +Plain-text and human-readable
- +Supported by virtually every data tool
- +No proprietary dependencies
Cons
- −No types, formulas, or formatting
- −No charts or multi-sheet support
- −Comma and newline escaping can be tricky
- −Encoding ambiguities (UTF-8 vs others)
How to convert XLSX to CSV
- 1
Select XLSX files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
- 2
Choose csv — or any other format you need as a result (more than 200 formats supported).
- 3
Let the file convert, then download your csv file right away.
XLSX vs CSV
| Property | XLSX | CSV |
|---|---|---|
| Compression | Lossless | Uncompressed |
| DRM support | Yes | No |
| Open format | Yes | Yes |
When to use XLSX vs CSV
XLSX
- Financial and data analysis
- Storing formulas and charts
- Business spreadsheet sharing
- Collaborative data in Excel or Google Sheets
- Formatted tabular data with styling
CSV
- Exchanging tabular data between tools
- Importing data into databases
- Statistical software data input
- Simple data export and backup
- Universal spreadsheet data interchange
Use cases for XLSX → CSV
- Financial and data analysis
- Storing formulas and charts
- Business spreadsheet sharing
- Collaborative data in Excel or Google Sheets
- Formatted tabular data with styling
- Exchanging tabular data between tools
- Importing data into databases
- Statistical software data input
- Simple data export and backup
- Universal spreadsheet data interchange
Frequently Asked Questions
Is converting XLSX to CSV free?
Which devices and platforms can I use to convert XLSX to CSV?
Are my XLSX files uploaded to a server?
Can I convert multiple XLSX files at once?
What is the maximum file size?
Will converting XLSX to CSV lose quality?
Will transparent areas of my XLSX file be kept in CSV?
How will the file size change after converting XLSX to CSV?
Related Conversions
Specific converters
100% Free
No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.
No Signup Required
Start converting immediately without creating an account or sharing email address.
Private & Secure
Your files never leave your device. All processing is completed locally for maximum privacy.
Batch Conversion
Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.
Runs in Browser
Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.
200+ Formats
Supports a wide variety of formats including images, documents, audio, video, and more.
Convert XLSX to CSV Quality Rating
How was your experience? You need to convert and download at least one file to provide feedback!