CSV to Excel Converter
Turn a CSV file into an Excel (.xlsx) spreadsheet, directly in your browser.
No file upload: conversion runs on your device. Excel may interpret some cell values automatically when you open the spreadsheet.
How to convert CSV to XLSX
Choose your CSV file, select a delimiter if needed, and click Convert to Excel. The resulting spreadsheet will download to your device.
What Is a CSV to Excel Converter?
A CSV to Excel Converter turns a comma-separated values (CSV) file into an Excel workbook in XLSX format. CSV files store data as plain text, while XLSX files can be opened in Microsoft Excel and other compatible spreadsheet applications.
With this free tool, you can convert tables, exported reports, and other CSV datasets into a spreadsheet without creating an account.
Why Convert CSV to Excel?
Excel workbooks are convenient when you want to review tabular data, adjust column widths, add formatting, apply filters, or continue working with your information in a spreadsheet application. Converting CSV to XLSX gives you a starting workbook while preserving the CSV data as text.
Key Features
CSV to XLSX
Download your CSV data as an Excel .xlsx workbook.
Delimiter Options
Choose commas, semicolons, tabs, or pipes, or use automatic detection.
Quoted Fields
Supports quoted values, including fields with separators and line breaks.
Browser-Based Conversion
Your selected CSV is processed on your device rather than uploaded to our server.
Frequently Asked Questions
Is this CSV to Excel converter free?
Yes. You can convert CSV files to XLSX without registration or a subscription.
Is my CSV file uploaded to a server?
No. The file is read and converted in your browser. An internet connection is needed to load the spreadsheet conversion library.
Which CSV delimiters are supported?
You can select comma, semicolon, tab, or pipe delimiters. Automatic detection is also available; if it chooses incorrectly, select the delimiter manually.
Will numbers and dates keep their original formatting?
The converter writes CSV values as text cells. When you open the XLSX file, Excel may interpret or display certain values differently depending on its settings.
Can I convert very large CSV files?
The tool checks Excel worksheet limits of 1,048,576 rows and 16,384 columns. Large files may also be limited by your device's available memory.