Can I convert CSV back to Excel?

Yes — the tool supports both directions. Use the CSV to Excel tab to upload a .csv file and download a formatted .xlsx workbook.

What Excel formats are supported?

.xlsx and .xls are both supported. The tool converts the first sheet of your workbook to CSV.

Is my file stored after conversion?

No. Files are processed in memory on the server and immediately discarded after the converted file is sent to you.

What is the maximum file size?

The tool supports files up to 50MB. Password-protected Excel files are not supported.

Excel to CSV Converter — Free Online XLSX to CSV Tool

Convert Excel spreadsheets to CSV, or CSV files to Excel (.xlsx) in one click. Free, fast, and secure — files are processed server-side and immediately discarded. No signup required.

Notes

—Excel → CSV converts the first sheet of your workbook to a UTF-8 encoded CSV file.
—CSV → Excel produces a structured .xlsx workbook with one sheet containing all your data.
—Files are processed on the server and not stored — they are immediately discarded after conversion.
—Max file size: 50 MB. Password-protected Excel files are not supported.
—For best results, make sure your CSV uses a consistent delimiter (comma or semicolon).

Related tools

≠

Diff Checker (Text Compare)

Compare two text snippets side-by-side and highlight the differences.

{ }

JSON Formatter & Validator

Format, validate, and beautify JSON. Spot errors instantly with syntax highlighting.

📄

PDF Merge & Split

Combine multiple PDFs into one, or extract a specific page range.