CSV to Excel (.xlsx)
FavoriteCSV to Excel turns a CSV export into a real .xlsx workbook right in your browser. Free and private: nothing you paste is uploaded to a server.
Upload CSV or paste below
Delimiter
Encoding
How it works
- 1
Upload CSV
If characters look wrong, try Windows-1251 or leave on Auto.
- 2
Build XLSX
A real Excel workbook with columns — no Text-to-Columns.
- 3
Open in Excel
Download .xlsx and share. Built in your browser.
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Why people use Toolsy
Fast
You get the result in a second. No waiting in a line.
Private
Browser tools stay on your device. Uploaded files are processed and discarded with the response.
No sign-up
Open the page and start. An account is only for paid plans.
Other tools
Convert CSV to Excel without uploading your file
CSV to Excel is for turning a comma-separated export into a workbook you can sort, filter, and share.
Paste text or drop a .csv file in the browser. Download an .xlsx without sending the data to a server.
This page is spreadsheet-out. For JSON output, open CSV to JSON. Both converters stay on your device.
Good for
- Report cleanups
- Sharing sheets
- Opening CSV in workbooks
- Quick one-off converts
Tips
- Keep a header row
- Check delimiter if columns look wrong
- Prefer .xlsx over old .xls
- Use CSV to JSON for APIs
Common questions
How does CSV to Excel work on this page?
Paste CSV or drop a file. The tool builds a real .xlsx workbook you can download, all in your browser.
Is CSV to Excel free?
Yes. This browser tool has no daily AI run limit. An account is only for favorites and paid plans.
Does CSV to Excel upload my data?
No. Conversion stays on your device. We do not see or store what you paste.
CSV to Excel or CSV to JSON?
Use CSV to Excel for a spreadsheet workbook. Use CSV to JSON when you need a JSON array for code or APIs.
Will CSV to Excel open in common spreadsheet apps?
Yes. You get a standard .xlsx file that opens in common spreadsheet apps.