Free Online Delimiter Converter - Split & Join Text Instantly
Delimiter.site is a free, browser-based delimiter converter that lets you split any column of text into a clean, delimited list in seconds. Paste your data, choose how to split it, choose how to join it, and press the convert button - no account needed, and your text is never stored or logged.
What Is a Delimiter Converter?
A delimiter converter takes a block of text where each item sits on its
own line (or is separated by a known character) and reformats it so the items are joined
by a different separator. The most common use case is turning a column copied from a
spreadsheet into a comma-separated list you can drop straight into a SQL IN (…)
clause, a Python list, or a CSV field.
Delimiters are everywhere in data work: commas in CSV files, tabs in TSV exports, semicolons in European locale CSVs, pipes in log files, and newlines in plain lists. Being able to switch between them quickly - without writing a script or opening Excel - saves real time every day.
How to Use the Delimiter Converter
Step 1 - Paste Your Data
Click the Paste button to pull text directly from your clipboard, or click Try sample to load a demo list of fruits. You can also type directly into the left panel. Each item should be on its own line for the default Newline split mode.
Step 2 - Choose Your Split Mode
Use the tab bar at the top to tell the converter how your input is currently delimited. Options include Newline, Comma, Semicolon, Tab, Space, Pipe, and Custom (enter any character or string).
Step 3 - Pick a Join Character
The dropdown in the center panel controls how the output items will be joined. Choose from comma, pipe, semicolon, tab, newline, space, or type any custom string. The output updates only when you press the green convert button, so you can tweak settings freely before committing.
Step 4 - Apply Options & Convert
Open the Options panel to trim whitespace, remove empty lines, deduplicate items, or sort the list A→Z or Z→A. You can also wrap each item in double quotes, single quotes, backticks, or parentheses using the Wrap selector. When everything looks right, press › to convert, then copy the result with one click.
Common Use Cases
SQL IN Clauses
Copy a column of IDs from a spreadsheet, paste them in, choose Comma as the join
character, wrap with single quotes, and you have a ready-to-paste
IN ('id1', 'id2', 'id3') list for your query.
Programming Lists
Python, JavaScript, and most other languages use comma-separated items inside brackets.
Paste your values, join with , , wrap with double quotes, and copy the output
straight into your code editor.
Cleaning Exported Data
Tab-separated exports often need to be converted to CSV or vice versa. Switch the split mode to Tab, the join to Comma, enable Trim whitespace, and convert in one step.
Common Delimiter Conversions
| From | To | Typical use |
|---|---|---|
| Newline (column) | Comma | Spreadsheet column → CSV row or function argument list |
| Newline (column) | Comma + single quotes | SQL IN ('a', 'b', 'c') clauses |
| Comma | Newline | Turn a CSV row into a readable one-per-line list |
| Tab | Comma | Convert TSV exports (Excel copy-paste) to CSV |
| Comma | Pipe | Pipe-delimited feeds and legacy import formats |
| Space | Newline | Split a sentence or tag list into separate lines |
Frequently Asked Questions
How do I convert a column to a comma-separated list?
Paste the column into the left panel (Newline split mode is the default), pick Comma as the join character in the centre dropdown, and press the convert button. The right panel shows your comma-separated list, ready to copy.
What exactly is a delimiter?
A delimiter is the character that marks the boundary between items in text data: the comma in CSV files, the tab in TSV exports, the pipe in log files, or the line break in a plain list. Converting between them is what this tool does.
What's the difference between CSV and TSV?
CSV separates values with commas and TSV with tabs. TSV survives values that contain commas without quoting, which is why spreadsheets use tabs when you copy cells. Converting TSV to CSV here is one switch of the split mode.
Can I wrap each item in quotes for SQL?
Yes — the Wrap selector adds double quotes, single quotes, backticks, parentheses or brackets around every item. Combine single quotes with a comma join and you have a paste-ready SQL IN clause.
Can Excel do this without a tool?
Excel's TEXTJOIN function can join a column with a delimiter, but it needs a formula, quoting requires extra steps, and reversing the operation needs Text-to-Columns. Pasting here is faster for one-off conversions and handles dedupe and sorting in the same pass.