Paste two lists
Add the first and second sets with one item on every row.
List merger
Merge Two Lists Online
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
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Merged list
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How to use Merge Two Lists
Choose merge behavior
Append, alternate, zip corresponding rows, or create a unique ordered union.
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.
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