Group List Items - Group Items in a List Online

What Is a List Item Grouper?

The Group List Items tool lets you split a list into groups of a specified size and format them with custom separators and wrapping characters. You can control how items are grouped, how groups are separated, and whether to fill incomplete groups with padding.

How to Use the Group List Items Tool

Paste or type your list into the Input List text area.
Choose a Separator Mode — use Literal for a fixed character or Regex for a pattern.
Enter the Input Separator that currently divides your items (e.g., \n for newlines).
Set the Group Size to specify how many items go in each group.
Customize the Item Separator (between items in a group) and Group Separator (between groups).
Optionally set Left Wrap and Right Wrap characters to enclose each group (e.g., brackets or quotes).
Toggle Delete Empty Items and Pad Non-full Groups as needed.
The grouped result appears instantly in the output area.

Common Use Cases

Break a long list into smaller chunks for better readability or processing.
Convert a flat list into structured data like TSV or CSV by grouping items into rows.
Create formatted output with brackets, parentheses, or custom wrapping for code or documentation.
Pad incomplete groups with a placeholder character to maintain uniform group sizes.

Frequently Asked Questions

What is the default group size?

The default group size is 3, meaning items are grouped in sets of three. You can adjust this to any positive integer.

Can I use regular expressions for splitting?

Yes. Switch to the Regex separator mode and enter a valid pattern. For example, \s+ splits on whitespace, and [,;] splits on commas or semicolons.

What happens if the last group has fewer items than the group size?

When Pad Non-full Groups is enabled, the last group is filled with the padding character you specify. When disabled, the last group will simply have fewer items.

Can I wrap groups in parentheses or quotes?

Yes. Use the Left Wrap and Right Wrap fields to surround each group with any characters you like, such as parentheses (), brackets [], or quotes "".

Does this tool work with large lists?

Yes. The tool processes everything in your browser, so it handles large lists efficiently. All computation is done client-side for speed and privacy.