Convert CSV to Excel (XLSX) Online
Turn a CSV file into a structured Excel workbook. Preview its rows and columns, then download a native .xlsx file without uploading your data.
CSV to Excel Converter
Your CSV is parsed and converted locally in this browser. It is not sent to Kanaries servers.
- 01Creates a native .xlsx workbook from CSV data.
- 02Handles quoted commas, quoted newlines, and UTF-8 text.
- 03Preview rows and columns before downloading.
- 04Private, browser-based, and free to use.
A Reliable CSV to XLSX Workflow
Native Excel Output
Download a genuine .xlsx workbook that opens in Excel, Google Sheets, LibreOffice, and other spreadsheet tools.
Accurate CSV Parsing
Quoted values, embedded commas, line breaks, and Unicode text are parsed before rows are written into spreadsheet cells.
Local Conversion
The CSV stays on your device while the browser creates the workbook, reducing exposure of sensitive data.
Why Convert CSV to Excel?
CSV is a portable text format, while Excel XLSX is a workbook format designed for spreadsheet editing, formatting, formulas, and collaboration.
Convert CSV to Excel when you want a spreadsheet-ready file while keeping the original rows and columns intact.
- Easier Spreadsheet Editing
- XLSX gives each value a cell and makes filtering, sorting, formatting, and adding formulas more convenient.
- One Clean Worksheet
- The converter places the CSV table into a worksheet so it opens immediately without an import wizard.
- Better Sharing
- An XLSX file is familiar to colleagues who work in Excel and avoids delimiter or encoding choices during opening.
How to Convert CSV to Excel
- 01
Choose a CSV File
Select a standard comma-separated CSV file from your device.
- 02
Confirm the Table
Review the parsed headers, rows, columns, and quoted fields in the preview.
- 03
Create the Workbook
Run the conversion to place the table in an Excel worksheet.
- 04
Download XLSX
Save the generated .xlsx file and open it in your preferred spreadsheet app.
CSV to Excel Best Practices
Keep Headers Unique
Use a single first row with clear, unique column names before creating the workbook.
Use Standard CSV Syntax
Use commas between fields and double quotes around values that contain commas, quotes, or line breaks.
Review Leading Zeros
Identifiers such as ZIP codes can start with zero. Check those columns after opening the XLSX file.
CSV to Excel FAQ
Q01How do I convert CSV to Excel online?
Select your CSV, review the parsed table, run the conversion, and download the resulting .xlsx workbook.
Q02Does this create XLS or XLSX?
It creates the modern .xlsx format, which is the standard Excel workbook format supported by current spreadsheet apps.
Q03Will quoted commas remain in one cell?
Yes. Properly quoted CSV fields are parsed as one value, even when they contain commas or line breaks.
Q04Can Excel open the file directly?
Yes. The downloaded file is a native XLSX workbook and does not require Excel's text import wizard.
Q05Is my CSV uploaded?
No. Conversion runs locally in your browser and the CSV is not sent to Kanaries servers.
Q06Is the CSV to Excel converter free?
Yes. It requires no registration, subscription, or desktop installation.