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CSV ⇄ Excel Converter
Switch between CSV and Excel formats in one click. Direction is detected automatically from your file — multi-sheet workbooks export as a ZIP of CSVs. Nothing is uploaded.
Processed on your device • Never uploaded
Drop CSV or Excel file here or click to browse
.csv, .tsv, .xlsx and .xls supported
How It Works
Both directions
- • CSV / TSV → clean Excel workbook (.xlsx)
- • Excel → CSV, with every sheet exported
- • Multi-sheet workbooks download as one ZIP
Instant & private
- • Conversion happens in milliseconds, locally
- • Your data never leaves your device
- • Works offline after the first load