About Merge Lists Line by Line
A line merger is a tool that joins two lists side by side: line 1 of the first list with line 1 of the second, and so on. The two parts are joined with the separator you type, such as a dash, comma, or equals sign. If one list is shorter, its missing lines are treated as empty, so the separator still appears. It pairs lines by position only and cannot match them by a shared key.
How to use Merge Lists Line by Line
- Type or paste into the "First list" box and the "Second list" box, or press "Use example" to try it with sample data.
- Set "Separator between the two" if the defaults do not fit.
- The result appears below and updates as you type.
- Copy the result with the copy button, or download it as a file where that is offered.
Questions about Merge Lists Line by Line
What happens if the two lists have different lengths?
The output has as many lines as the longer list. Where the shorter list has run out, that side is left empty and the separator is still written, so you can spot the unmatched lines.
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