CSV Merge — Join CSV Files by Column

About this tool

Join up to four CSV files by a common column, similar to SQL JOIN or Power Query Merge. Choose INNER, LEFT, RIGHT or FULL joins and preview the combined data.

Features:

• Merge up to four files — join using a selected key column
• Join types - INNER, LEFT, RIGHT, FULL JOIN
• Key column selection — join on one common column
• Automatic detection — inspect file structure and data types
• Result preview — display the first rows of the merged file
• Data validation — check column compatibility
• Flexible settings — choose delimiters, encoding and export options

Use cases:

Combine data from different sources, prepare tables for analysis and match records between systems.