Multi-Sheet Merger
Merge multiple CSV sheets into one combined file, with a source-sheet column added automatically so every row traces back to its origin.
How to use Multi-Sheet Merger
- Start by providing the required input: Drop 2 or more CSV sheets.
- Set the inputs and options shown here: Source column name.
- Run the tool with Merge Sheets.
- Review the results, then choose an output control: Download Merged CSV.
Combining sheets without losing track of where each row came from
Merging multiple CSV sheets into one file is straightforward until someone later asks "which sheet did this particular row come from" — a question a plain merge can't answer. Adding a source-sheet column automatically during the merge keeps that provenance intact permanently.
When provenance tracking actually matters
Combining regional sales sheets, team status reports, or any dataset where you'll later need to filter or audit by original source benefits from this — the source column lets you slice the combined data right back apart whenever needed.
What's the difference from Data Combiner?
Data Combiner does a plain row-stack merge; this adds a dedicated source-sheet column to every row so you can always trace it back to its original file.
Can I rename the source column?
Yes — set any label you want for it before merging; "Source Sheet" is just the default.
Do the sheets need identical columns?
They work best with matching columns — the first sheet's column structure is used as the merge template.