CSV Join / Lookup

Join two CSV tables by matching key columns, like a lightweight VLOOKUP.

Or paste data manually below. Files are processed locally in your browser.

Paste CSV A, then a line containing ---, then CSV B.

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Free Online CSV Join / Lookup

Join two CSV datasets by key columns in your browser. Merge matching rows, keep unmatched rows, and create lookup-style output. Use it for spreadsheet cleanup, CSV QA, data migration, reporting, and browser-based data preparation.

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