CSV Joiner

Perform SQL-style JOINs on two CSV files using a common key column. Fast, private, and secure browser-based tool with no sign

Your files never leave your device. Processed locally. 100% private.

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How To Use CSV Joiner

Complete your task perfectly in just three straightforward steps.

1

Upload two CSVs

Upload the left and right CSV files to join.

2

Configure join

Select key columns from each file and choose join type: INNER, LEFT, RIGHT, or FULL OUTER.

3

Download

Download the joined CSV.

FAQ

Everything you need to know about the CSV Joiner.