CSV to XLSX

Convert CSV files or pasted tabular data to a simple Excel XLSX workbook entirely in your browser.

Drop a file here

Preparing CSV to XLSX workspace…

Processed locally. Your files never leave your device.

What CSV to XLSX does

Turn delimited text into a simple XLSX workbook with one Data worksheet.

Input
CSV
Output
XLSX
  • The first row supplies column headings; CSV cell values are written as strings.

How to use CSV to XLSX

  1. Paste or edit CSV, or load a CSV file.
  2. Detect the delimiter or select comma, semicolon, tab, or pipe; review the live table and download XLSX.

When to use it

Package a CSV export as a workbook while keeping leading-zero identifiers as text.

Important limitations

  • This creates a values-only worksheet without charts, formulas, or styling. Use unique headings to make the table unambiguous.

CSV to JSON

Convert delimited CSV data to formatted JSON.

Output: JSON

XLSX to CSV

Convert an Excel worksheet to CSV.

Output: CSV

JSON to XLSX

Convert tabular JSON data to an Excel XLSX workbook.

Output: XLSX