Convert CSV ↔ Excel Free – Fast Data Converter
Convert CSV files to Excel (.xlsx) and vice-versa.
CSV → Excel
Excel → CSV
Click to upload Excel file
Supports .xlsx and .xls
Frequently Asked Questions
When converting Excel to CSV, the tool processes the first sheet by default. For CSV to Excel, a single sheet is created.
The tool can handle standard Excel limits (up to 1,048,576 rows), but browser memory may limit extremely large datasets.
No. The conversion happens entirely within your browser. Your files never leave your computer.
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