Convert XLSX to CSV
What is XLSX?
Microsoft Excel Spreadsheet
XLSX is the XML-based spreadsheet format used by Microsoft Excel since 2007. It uses ZIP compression to store worksheets, formulas, formatting, and charts in XML format. Supports advanced features like pivot tables, macros, and complex calculations with millions of rows and columns.
- XML-based structure with ZIP compression
- Supports formulas and calculations
- Multiple worksheets per file
- Charts, graphs, and pivot tables
- Conditional formatting and data validation
What is CSV?
Comma-Separated Values
CSV is a plain text format for storing tabular data where each line represents a row and values are separated by commas (or other delimiters). It's the simplest and most universal format for data exchange, containing no formatting, formulas, or multiple sheets - just raw data.
- Plain text format
- Universal compatibility
- No formatting or formulas
- Small file size
- Easy to parse programmatically
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 download your CSV file
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
Frequently Asked Questions
Why is my CSV file so much larger than the XLSX?
CSV stores data uncompressed or with less compression, preserving maximum quality at the cost of file size. A XLSX file uses compression to reduce size. Expect CSV files to be 5-10x larger, which is normal and necessary for maintaining quality.
Can I convert multiple XLSX files at once?
Yes! Free users can convert up to 3 files per batch (5 conversions/day total). Premium users get batch conversion of up to 20 files with automatic ZIP download. Simply select multiple files when uploading.
Is my data safe during conversion?
Yes! Files are processed on GDPR-compliant European servers with automatic deletion after 5 minutes. We don't store, analyze, or share your files. The conversion is secure and private.
What are the conversion limits?
Free: 5 conversions per day, max 100MB per file, up to 3 files per batch. Premium: Unlimited conversions, max 500MB per file, up to 20 files per batch with ZIP download.
How long does conversion take?
Most conversions complete in seconds. Small files (under 10MB) typically convert in 1-5 seconds. Larger files or complex formats may take 10-30 seconds. Browser-based conversions are usually faster than server-processed ones.
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