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Combine multiple CSV files into one with automatic column alignment and header handling.
Upload multiple CSV files you want to merge together.
The tool analyzes columns and detects header rows automatically.
Choose how to handle mismatched columns and duplicate headers.
Download the combined CSV file with all data merged.
Automatically aligns columns across files by header name.
Detects and handles header rows to avoid duplication.
Merge any number of CSV files in one operation.
Gracefully handles files with different column sets.
All merging happens in your browser — no data uploaded.
The merger aligns columns by name. Missing columns in some files are filled with empty values.
No, the tool detects header rows and includes them only once in the merged output.