📊 CSV to Excel Converter
Convert CSV files to Excel (XLSX) instantly – no upload, 100% private
100% Private
No Upload
Fast & Free
Drag & drop your CSV file here
or click to browse
Converting... this may take a moment
Conversion complete!
Download Excel (.xlsx)
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Note: CSV files contain only raw data – no formatting (borders, colors, fonts) is stored. The resulting Excel file will have your data in plain cells, ready for further editing.
🔧 How It Works
1. Upload CSV
Select any .csv file
2. Convert locally
Processing happens in your browser
3. Download Excel
Get your .xlsx file instantly
❓ Frequently Asked Questions
Is my CSV data private?
Absolutely. All conversion happens in your browser – your file never leaves your device.
Will my formatting be preserved?
CSV files don't store formatting (borders, colors, fonts). Only the raw data is transferred. You can add formatting later in Excel.
What about special characters?
SheetJS handles UTF‑8 encoding, so international characters and symbols are preserved.