CSV to XLSX Converter
Wrap a CSV file (or pasted CSV) into a single-sheet Excel .xlsx file. Pick the delimiter, sheet name, and output filename.
Drag a .csv file here or
How to use CSV to XLSX
- Drop or paste your CSV.
- Set sheet name and output filename.
- Click Build XLSX, then Download.
What is CSV to XLSX?
The reverse of XLSX-to-CSV — packages CSV data into a real .xlsx workbook compatible with Excel, Google Sheets, and Numbers. Useful when downstream systems require Excel files but you have CSV.
FAQ
- Can I add multiple sheets?
- Not yet — current version creates one sheet per file. Multi-sheet support is on the roadmap.
- Does this tool upload my file to a server?
- No, all processing happens in your browser. Your CSV is never uploaded or sent anywhere; it stays on your device.
- Can I specify the delimiter when converting CSV?
- Yes, you can choose the delimiter (e.g., comma, tab) before generating the XLSX file.
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