CSV to Excel
Convert a CSV file to Excel (.xlsx) in your browser. Download a real spreadsheet — nothing is uploaded.
Change CSV delimiter
Change a CSV delimiter between comma, semicolon, and tab in your browser, then re-export the file.
Drop a CSV file here or click to choose
Processed locally — nothing is uploaded
How to use Change CSV delimiter
Change the CSV delimiter between comma, semicolon, and tab. Re-export with the new separator.
Everything runs locally in your browser — your files are never uploaded to a server.
Change CSV delimiter FAQs
How do I change a CSV delimiter?
Drop a CSV, choose comma, semicolon, or tab as the output separator, then download the re-exported file.
Is changing CSV delimiters free?
Yes. Every Excel and CSV tool on ReallyUseful.Tools is free to use, with no account or subscription required.
Are my files uploaded?
No. Files are processed in your browser on this device. Nothing is uploaded to our servers.
How do I convert semicolon CSV to comma CSV?
Open the file here, set the output delimiter to comma, and download. Useful for European exports that use semicolons.
More Excel/CSV
Excel to CSV
Convert Excel .xlsx or .xls to CSV in your browser. Choose a sheet and delimiter, then download.
CSV viewer
Open and browse a CSV in a paginated table in your browser. No upload — view large files locally.
Merge CSV files
Combine multiple CSV files into one in your browser. Rows are stacked and headers aligned by name.
CSV to XML
Convert CSV rows into structured XML in your browser. Each row becomes an element — nothing is uploaded.