100% Client-Side

CSV to Excel Converter

Free online CSV to Excel converter. Convert CSV data to .xlsx spreadsheet files with live preview. Powered by SheetJS. — runs 100% in your browser, client-side only. No data is sent to any server. Free to use, no account required.

Free Client-Side No Login No Storage
Loading tool...
CSV to JSON Converter Convert CSV data to JSON — paste your CSV, get instant JSON JSON to CSV Converter Convert JSON arrays to CSV with proper escaping — download as .csv JSON Formatter & Validator Beautify and validate JSON data — with syntax highlighting and error detection

How to Use the CSV to Excel Converter

  1. Paste CSV data (comma-separated).
  2. Optionally set a sheet name.
  3. Click Download Excel to get an .xlsx file.

Powered by SheetJS. All processing is local.