Change the delimiter of your CSV (commas, semicolons, tabs).
About CSV to Delimited
The same CSV can open perfectly in one program and as a single column in another, because Excel in Spanish, French or German expects semicolons, most databases and APIs expect commas, and some legacy systems want tabs or pipes. This tool replaces the commas in your CSV with the delimiter you choose and downloads the result as a new file.
Paste the comma-separated content, type the new delimiter (a semicolon by default) and click Convert. The replacement happens in your browser, so exports with customer or financial data are never uploaded anywhere.
How to use CSV to Delimited step by step
Type the name for the output file; the .csv extension is added for you.
Enter the new delimiter in the "New delimiter" field. It can be a semicolon, a pipe, a tab character or any other text.
Paste the comma-separated CSV into the text area.
Click "Convert and download". The file is generated with Windows line endings (CRLF), which Excel expects.
100% free and online: no payments, no software or extensions to install.
Privacy-first: processing happens in your browser, your data never leaves your device.
No sign-up: paste your data and get the result in one click.
Fast and reliable: handle small or large files in seconds, ready for Excel and other tools.
Common use cases
Make a CSV exported from a US SaaS tool open correctly in Excel with Spanish or French regional settings.
Prepare a pipe-delimited file for a mainframe or an ERP import that does not accept commas.
Produce a tab-separated file (TSV) for tools such as BLAST, Weka or old statistics packages.
Convert a list of prices that uses a comma as decimal separator by moving the field separator to a semicolon.
Limits and tips
Every comma on each line is replaced, including commas inside quoted values. A cell such as "Madrid, Spain" becomes "Madrid; Spain" with a semicolon delimiter, which is usually harmless but changes the text.
Only comma-separated input is supported; the tool does not convert from semicolons or tabs back to commas.
The delimiter field accepts more than one character, so you can use :: or a tab pasted from an editor.
The file keeps the .csv extension whatever the delimiter; rename it to .tsv or .txt afterwards if a program requires it.
Frequently asked questions
Why does Excel open my CSV in a single column?
Excel uses the list separator defined in your operating system's regional settings. In Spain, France, Germany and many other countries that separator is a semicolon, so a comma-separated file is read as one wide column. Converting the delimiter to a semicolon fixes it without touching Excel settings.
What is the difference between CSV and TSV?
Both are plain-text tables. CSV separates values with commas (or semicolons in some locales) and TSV uses a tab character. TSV avoids conflicts with commas inside values and is common in bioinformatics and data science tools; CSV is more widely supported by spreadsheets and web applications.
Can I use the tab character as delimiter?
Yes. Paste a real tab character into the delimiter field (copy one from a text editor, since the Tab key moves focus in the browser). Each comma is then replaced by a tab and the result is a TSV file.
Does the tool respect quoted fields?
No. It performs a plain replacement of every comma on each line, so commas inside quotes are replaced too. If your data has many quoted values containing commas, use the CSV Viewer and Editor or Excel to CSV tool, which parse quotes correctly.
Is the content uploaded?
No. The replacement runs in your browser with JavaScript and the resulting file is generated locally. Nothing reaches csvcreator.com servers.