Private spreadsheet converter

CSV to Excel Converter

Convert CSV files to Excel (XLSX) online. Fast, free, and secure CSV to Excel converter. No installation required.

100% browser-based CSV/TSV/TXT XLSX download
Converter

Convert CSV to Excel

No upload

CSV input

Excel preview

First rows shown
Input settings
Excel output settings
Private by design

Your CSV never leaves this tab

Your CSV is opened, previewed, and converted into an Excel XLSX workbook locally in your browser.

Processed locally

Your CSV file is read and converted right here in this browser tab.

No account required

No sign-up, email, payment details or tracking pixels are needed.

Visible sheets stay separate

Customer exports, analytics files, contact lists, and pasted spreadsheet data stay on your device until you download the workbook.

No upload: your file is converted in this tab. We do not receive your file name or file content.
Four steps

How to Convert CSV to Excel

1

Upload your CSV file

Choose a .csv, .tsv, or .txt file, or paste CSV data directly into the input box.

2

Choose Excel XLSX format

Choose how your CSV columns, text encoding, headers, and worksheet name should be handled.

3

Click Convert

Preview the converted Excel table in your browser before creating the final workbook.

4

Download your Excel file

Download the converted XLSX file for Excel, Google Sheets, Numbers, reporting, or sharing.

Use cases

Why Convert CSV to Excel?

CSV

  • Plain text with comma-separated values
  • No formulas, charts, or cell formatting
  • Limited structure for spreadsheet workflows
  • Can open with wrong encoding in Excel

Excel

  • Spreadsheet cells that Excel can recognize as text, numbers, dates, or true/false values
  • Ready for formulas, charts, filters, and formatting
  • Clear columns, headers, and sheet name
  • Better for sharing CSV spreadsheet data with Excel users
CSV to XLSX

CSV to XLSX Converter

CSV to Excel and CSV to XLSX usually describe the same task: turning plain delimited text into a modern Excel workbook. This converter creates a .xlsx file directly in your browser.

CSV input

Name,Email,Signup Date,Revenue
Alice,alice@example.com,2026-01-15,129.50
Bob,bob@example.com,2026-02-03,89.00

Excel output

Name | Email             | Signup Date | Revenue
Alice | alice@example.com | 2026-01-15  | 129.50
Bob   | bob@example.com   | 2026-02-03  | 89.00
Encoding

Fix CSV Encoding Before Opening in Excel

If you are moving the other direction, the Excel to CSV UTF-8 guide explains when to use a BOM, how delimiters affect Excel, and why text can look garbled after export.

Choose the right encoding

Try UTF-8, UTF-16, ISO-8859-1, or Windows-1252 when accented characters, symbols, or non-English text look wrong in Excel.

Detect common delimiters

Auto detect comma, semicolon, tab, or pipe-delimited data, and use a custom delimiter for unusual exports.

Set Excel output

Name the worksheet, use the first row as headers, and apply date or number formats to the XLSX workbook.

No upload required

The conversion runs locally, so files never leave your browser and unlimited conversions stay private.

Good to know

Frequently Asked Questions

How do I convert CSV to Excel?

Upload a CSV file or paste CSV data, choose the delimiter and encoding if needed, click Convert, then download the Excel XLSX file.

Can I convert CSV to XLSX?

Yes. This CSV to XLSX converter creates a modern .xlsx workbook that opens in Excel, Google Sheets, Numbers, and other spreadsheet apps.

Does this converter work with large CSV files?

The converter runs locally in your browser and supports CSV text up to 25 MB, with built-in checks to prevent files that are too large for Excel.

How do I open a CSV file in Excel?

You can open CSV files directly in Excel, but converting CSV to XLSX first can make your columns easier to read, edit, and share.

Why does Excel show incorrect characters from CSV?

Garbled text usually means Excel guessed the wrong CSV encoding. Try UTF-8, UTF-16, ISO-8859-1, or Windows-1252 before converting to Excel.

Is CSV to Excel conversion free?

Yes. This free CSV to Excel converter requires no account, no installation, and no upload.

Can I paste CSV data instead of uploading a file?

Yes. Paste comma-separated, semicolon-separated, tab-separated, or custom-delimited data into the CSV input box and convert it to Excel.

Can I use the first row as Excel headers?

Yes. Keep First row as header enabled to use the first CSV row as column names, or turn it off to treat every row as data.

Are my CSV files uploaded to a server?

No. Your CSV file is parsed and converted in your browser, so file contents never leave your device.

More converters

Related Converters

XML to CSV Converter → JSON to Excel Converter → XLSX to CSV Converter → Excel CSV Encoding Guide → XML to Excel Converter →

Move data between CSV, Excel, XML, and JSON with private browser-based converters.

Ready to convert CSV into Excel?

Upload a CSV file or paste CSV data and download an XLSX workbook locally in your browser.

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