Convert CSV to Excel

Turn a CSV into a proper Excel workbook — numbers, leading zeros and special characters all intact.

  • Free, no sign-up
  • Files stay on your device
  • Up to 20 MB per file

Your files

Drop your files here

CSV · Up to 10 files at once · Up to 20 MB per file, 60 MB in total

Options

Separator

Add files to start.

Results

Your Excel workbooks will appear here.

Nothing is uploaded — files are processed on this device.

How to use CSV to Excel

  1. Drop your CSV files on the upload area, or choose them — up to 10 at once.
  2. Choose your options.
  3. Press Convert to Excel. Each file is checked first; problems are reported per file.
  4. Download each result, or everything at once as a ZIP.

Supported files and limits

Accepts
CSV
Creates
XLSX
Limits
Up to 10 files at once · Up to 20 MB per file, 60 MB in total · Up to 1,000,000 cells

Good for

  • Opening CSV data in Excel without mangled zeros or dates
  • Sharing a tidy spreadsheet instead of a raw CSV

What happens to your files

Your files are opened and processed by your own browser. They are not uploaded to TextVix or anyone else, and nothing is kept after you close the tab. Downloads are created on your device.

  • Excel to CSV

    Convert each sheet of an Excel (.xlsx) workbook into a CSV file.

  • CSV Formatter

    Clean up CSV: change the separator, trim cells, fix quoting and even out rows.

  • JSON to CSV

    Convert a JSON array of objects into a CSV table you can open in a spreadsheet.

  • CSV to JSON

    Convert CSV rows into a JSON array, using the first row as field names.

  • Base64 Encode / Decode

    Encode text to Base64 or decode Base64 back to readable text (UTF-8).

  • URL Encode / Decode

    Percent-encode text for use in URLs, or decode %20-style text back.

  • HTML Entities Encode / Decode

    Escape < > & and quotes as HTML entities, or turn entities back into characters.

  • JSON Formatter

    Format and validate JSON with clean indentation — numbers and text are kept exactly as written.

Questions about CSV to Excel

More answers in the TextVix FAQ.

Why not just open the CSV in Excel?

Excel guesses types when it opens a CSV: it drops leading zeros and turns some values into dates. A converted workbook stores exactly what the CSV says.

Can a cell run a formula?

No. Cells starting with =, +, - or @ are saved as text.

Are my files uploaded?

No. Files are opened and processed by your browser, on your device. TextVix never receives them, and they are gone when you close the tab.