CSV to styled Excel

0 uploads — runs entirely in your browser, works offline

Drag files here, or .

Turn a CSV into a tidy .xlsx with sized columns — on your device, nothing uploaded.

CSV to styled Excel — tidy .xlsx from CSV

Turn a CSV into a clean .xlsx with sensibly sized columns. It runs entirely in your browser (0 uploads, works offline).

How to use it

  1. Add your .csv files.
  2. Convert them.
  3. Download the .xlsx.

FAQ

How do I convert CSV to Excel for free?

Add the CSV and this page builds an .xlsx workbook with the columns widened to fit their content — on your device with no upload.

Is my CSV uploaded anywhere?

No. Conversion runs entirely in your browser and nothing is transmitted or stored, which you can verify by turning off your Wi-Fi.

Why convert CSV to Excel?

A native .xlsx keeps column widths and opens cleanly with types and formatting that plain CSV cannot carry.

Does it detect delimiters?

It reads standard comma-separated values; convert other delimiters to commas first with the delimiter converter.

Limits

Produces a single styled sheet with auto-width columns; rich formatting and formulas are not added.

Related

The Excel-to-CSV tool goes the other way; the CSV cleaner tidies input first.

Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.