CSV Merger (Join on Key)

Name: CSV Merger (Join on Key)
Rating: 4.8 (100 reviews)

Perform inner, left, or full joins on two CSV files directly in your browser

CSV File 1

Choose first CSV fileCSV file with headers

CSV File 2

Choose second CSV fileCSV file with headers

• Ensure the selected key columns in both CSVs have consistent formatting and data types for accurate matching.
• This tool is best for small to medium-sized CSVs (e.g., up to a few thousand rows each). Larger files may cause browser performance issues.
• Double-check your column headers for trailing spaces or subtle differences that might prevent a match.
• For 'Left Join', File 1 is the "left" table. All its rows will be included.
• 'Full Join' includes all rows from both tables. Where there's no match, empty values will be used for columns from the other table.