Concatenate Text

What Is the Concatenate Text Tool?

The Concatenate Text tool takes a list of lines and joins them into one single line, with whatever separator you pick placed between each item. Type a comma, a pipe, a space, or any string into the Separator field and the tool handles the rest. It is built for the kind of repetitive reformatting work that comes up when you are moving data between systems and need a vertical list turned horizontal fast.

Most people reach for it when preparing values for SQL queries, CSV input, or any format that expects items strung together on one row rather than stacked. Doing that manually across even twenty lines gets old quickly.

How to Use This Tool

1. Paste or type your text into the input box above. Each line will be treated as a separate item.
2. Type your separator into the Separator field. This is the character or string that appears between each joined item in the output. A comma, a space, a pipe, a semicolon, or even a word all work.
3. Click the Join Text button and all your lines are merged into one line with your separator inserted between them.
4. Copy the result using the Copy button, or select and copy manually.

When Would You Use This?

Converting a column of IDs or values into a comma-separated string to drop into a SQL IN clause, where the format needs to be 1, 2, 3, 4 rather than one value per line.

Joining a list of tags, names, or keywords into a single line for a spreadsheet cell, a config file, or a form field that expects everything on one row.

Preparing pipe-delimited or semicolon-separated output from a plain list before importing it into a system that needs a specific format. The separator field is what makes this tool usable across those different situations without having to clean up the output afterward.

Examples

Joining a list of names with a comma

Input (one name per line): Alice
Bob
Carol
Separator: , (comma and space)
Output  : Alice, Bob, Carol

Building a SQL IN clause

Input   : 101
102
103
Separator: , (comma and space)
Output  : 101, 102, 103
Usage: WHERE id IN (101, 102, 103)

Joining words with a pipe character

Input   : red
green
blue
Separator: | (pipe)
Output  : red|green|blue

Joining lines with no separator

Input   : hello
world
Separator: (empty)
Output  : helloworld

Joining items with a word separator

Input   : cats
dogs
birds
Separator: " and " (word with spaces)
Output  : cats and dogs and birds

Frequently Asked Questions

What does concatenate mean?

It means joining things together end to end. In text and programming, concatenating strings means combining them into one continuous string. Joining "red", "green", and "blue" with a comma gives you "red,green,blue".

How do I join multiple lines of text into one line?

Paste your lines into the input box, set a separator, and click Join Text. Every line becomes one connected string with your separator placed between each item.

How do I concatenate text in Excel?

Use the TEXTJOIN function: =TEXTJOIN(", ", TRUE, A1:A10). It joins a range of cells with a delimiter you choose. CONCAT also works but does not handle delimiters as cleanly. If your data is not in a spreadsheet, this tool is faster than writing a formula.

How do I concatenate strings in Python?

The standard approach is the join method: ", ".join(["item1", "item2", "item3"]). You can also use the plus operator to combine two strings directly, though join is cleaner for lists.

Can I join lines with no separator at all?

Yes. Leave the Separator field empty and the lines will be joined directly with nothing between them. Three lines become one continuous string with no gaps.

How do I turn a list into a comma-separated string?

Paste your list into the input, type a comma followed by a space into the Separator field, and click Join Text. All items come out on one line separated by commas.

What is the difference between concatenation and merging?

In everyday text work they mean roughly the same thing. Technically, concatenation is joining strings in sequence end to end. Merging can sometimes imply combining content from multiple sources in a less ordered way. For this tool it is straightforward sequential joining.

How do I concatenate cells in Google Sheets?

Use =TEXTJOIN(", ", TRUE, A1:A10), same syntax as Excel. For a quick plain-text join outside of a spreadsheet, paste into this tool instead.

Is there a limit on how many lines I can join?

No hard limit is set. For typical tasks like a list of values, names, or IDs, it handles the whole block without issue.