1Input Datasets
0 loadedUpload CSV or JSON files to merge (min 2)
Select multiple files • Max 50MB
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Merge and combine multiple datasets with join operations and relationship mapping
Upload CSV or JSON files to merge (min 2)
Select multiple files • Max 50MB
A tool to combine multiple datasets into a single unified dataset using SQL-style join operations. It matches rows based on common columns (keys).
We support CSV (Comma Separated Values) and JSON (JavaScript Object Notation) files. You can mix and match formats when merging.
The tool supports 5 types of joins: Inner Join (matches only), Left Join (all left + matches), Right Join (all right + matches), Full Join (all records from both), and Union (vertical combination of all records).
Upload your two files, select the 'Join Type' (e.g., Inner Join), and then choose the unique 'Key' column from each dataset that should be used to match the rows (e.g., 'ID' or 'Email').
For standard Join operations (Inner/Left/Right/Full), you can only merge 2 files at a time. However, for 'Union' operations (stacking datasets on top of each other), you can merge multiple files simultaneously.
Yes, absolutely. All processing is done client-side in your browser. Your data is never uploaded to our servers or stored anywhere.