StructraMerge CSV Files
Free Tool

Merge CSV Files Online — Combine Multiple CSVs Into One

Upload multiple CSVs. We align columns and output one clean file.

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Advanced deduplication with exact-match, column-subset, and fuzzy matching. Pro tier coming this week via Stripe.

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What This Tool Fixes

Auto-align mismatched column names
Column reordering and alignment
Source file column for row traceability
Encoding normalization across all files

Frequently Asked Questions

How do I merge two CSV files with the same columns?

Upload both files to Structra's merge tool. We stack the rows from both files and output a single CSV. Column alignment is automatic.

Can I merge CSV files with different column names?

Yes. Structra's fuzzy column matching detects columns that represent the same data even when named differently (e.g., 'Email' vs 'email_address'). You review the alignment before merging.