Batch Convert XLSX to CSV
Convert multiple files at once with our powerful batch processor. All conversions happen securely in your browser - no uploads, no limits.
Unlimited Files
Convert as many files as you need - no restrictions or hidden limits
Lightning Fast
Process multiple files simultaneously with optimized performance
100% Private
All processing happens in your browser - files never leave your device
How Batch Conversion Works
1. Upload Multiple Files
Drag and drop any number of XLSX files, or click to browse. All files are queued for conversion.
2. Track Progress
Watch real-time progress for each file. Files are converted sequentially to ensure optimal performance.
3. Download Results
Download individual files as they complete, or get all files at once as a convenient ZIP archive.
4. Adjust Settings
Batch processing uses optimized settings for best results.
Need Single File Conversion?
For converting one file at a time, use our standard converter
Single File Converter