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.

Convert as many files as you need - no restrictions or hidden limits

Process multiple files simultaneously with optimized performance

All processing happens in your browser - files never leave your device

How Batch Conversion Works

Drag and drop any number of XLSX files, or click to browse. All files are queued for conversion.

Watch real-time progress for each file. Files are converted sequentially to ensure optimal performance.

Download individual files as they complete, or get all files at once as a convenient ZIP archive.

Batch processing uses optimized settings for best results.

For converting one file at a time, use our standard converter