List merger

Merge Two Lists

Combine two existing lists without generating a Cartesian product. Append one list after another, interleave their rows, zip corresponding rows, or return a deduplicated union.

No upload Free to use Works on mobile

Combine tool

Merge Two Lists

Options

Merged list

0 results

How to use Merge Two Lists

1

Paste two lists

Add the first and second sets with one item on every row.

2

Choose merge behavior

Append, alternate, zip corresponding rows, or create a unique ordered union.

3

Export the merged result

Copy or download the combined list in its resulting order.

Common uses

Combine exports

Append customer, product, URL, or keyword inventories from two sources.

Line-by-line labels

Zip IDs with names, values with units, or keys with descriptions.

Unique union

Merge overlapping lists while retaining each value only once.

Merge Two Lists FAQ

Does this generate every possible combination? +

No. Use the homepage List Combinator for Cartesian products. This tool merges existing rows using append, alternate, zip, or union modes.

What happens when zipped lists have different lengths? +

The tool keeps unmatched rows and joins only the corresponding value that exists.

Can the merged output remove duplicates? +

Yes. Unique union mode removes case-insensitive duplicates while preserving first appearance order.

Keep working

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