Convert XLSX to CSV
What is XLSX?
XLSX
XLSX follows Office Open XML standard (ECMA-376)—a ZIP container with XML files for worksheets, shared strings, styles, and calculation chains. Supports multiple sheets, formulas, pivot tables, charts, conditional formatting, and data validation. Replaced binary XLS format in Office 2007. Maximum 1,048,576 rows and 16,384 columns per sheet. Compatible with Excel, LibreOffice Calc, Google Sheets.
- XLSX is a spreadsheet format
What is CSV?
CSV
CSV (Comma-Separated Values) stores tabular data as plain text with delimiters (typically commas, semicolons, or tabs). Each line represents a row; delimiters separate columns. No formatting, formulas, or multiple sheets—just raw data. Universal compatibility across platforms. Extremely simple structure. Human-readable. Maximum size limited by available memory. Ideal for data exchange and import/export operations.
- CSV is a spreadsheet format
Why Convert XLSX to CSV?
✓ Database Import
Import data into databases, CRM systems, and other software that requires CSV
✓ Universal Compatibility
CSV works with any spreadsheet software, programming language, or data tool
✓ Data Processing
Simplify data for scripts, automation, and batch processing
✓ Smaller File Size
Plain text format is more compact than Excel's binary format
How to Convert XLSX to CSV
- Click the "Start Converting Now" button above
- Upload your XLSX file or drag & drop it
- Select CSV as the output format (pre-selected for you)
- Click "Convert" and processing begins. Download your CSV file when complete
Features
- ✓ 100% Free Conversion
- ✓ No Registration Required
- ✓ Fast Processing
- ✓ Cross-Platform Compatible
- ✓ Secure Server Processing
- ✓ Auto-Delete After 5 Minutes
- ✓ Batch Processing Available
- ✓ Mobile Friendly
Who Uses XLSX to CSV Conversion?
"I need to convert my XLSX files for a specific workflow"
→ CSV conversion happens in seconds — free, GDPR compliant, and requires no software installation
"I need to convert my XLSX files for a specific workflow"
→ CSV conversion happens in seconds — free, GDPR compliant, and requires no software installation
"I need to convert my XLSX files for a specific workflow"
→ CSV conversion happens in seconds — free, GDPR compliant, and requires no software installation
Frequently Asked Questions
Can I convert several XLSX files to CSV in one go?
Definitely. Free users can convert 3 .xlsx files simultaneously. Premium users get 20-file batches with ZIP packaging. All .csv outputs preserve source quality and metadata.
Where do you store my XLSX files?
We don't store XLSX files. EU servers (Austria) process CSV conversions then immediately delete data. Files exist only during conversion—5 minutes maximum, often deleted within seconds.
How big can my XLSX file be?
Free accounts: 100MB maximum. Premium accounts: 500MB maximum. Typical spreadsheet files convert easily. Upgrade Premium for larger XLSX to CSV conversions.
How quickly will my XLSX file convert to CSV?
Small XLSX files (under 10MB) typically convert to CSV in 5-15 seconds. Larger XLSX files or complex spreadsheet content may require 20-45 seconds depending on conversion method and file characteristics.
Do I need to install any software?
No! Everything works directly in your web browser. No downloads, no installations, no plugins required. Just upload your file and convert. Works on Windows, Mac, Linux, and mobile devices.
Ready to Convert?
Start converting your XLSX files to CSV now - it's fast, free, and secure!
↑ Convert XLSX to CSV Now