XLSX to CSV Converter
Convert Excel spreadsheets to CSV format. Multi-sheet support with individual downloads or ZIP export.
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.XLSX • Max 10 GB
LocFiles
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All processing happens locally in your browser. Your files never leave your device.
Lightning Fast
Uses your device's processing power for instant results. No upload waiting time.
Completely Free
No hidden fees, no premium plans. All features available to everyone.
No Limits
No file size limits, no daily quotas. Process as many files as you need.