Merge CSV Files

Upload multiple CSVs and combine them privately in your browser.

Upload CSV files

Selected: 0 file(s)

Merged CSV

How to merge CSVs (step‑by‑step)

  1. Upload all CSVs (header row required in each file for best alignment).
  2. We align columns by header name; columns missing in some files are filled with blanks.
  3. Preview the combined table and download as CSV.

Tips

  • Normalize header names before merging (e.g., "email" vs "Email").
  • Ensure consistent delimiters and encoding (UTF‑8).
  • Use the CSV validator to catch schema drift.

FAQ

How are headers aligned?
We match columns by header names; missing columns are filled with blanks.
Does this upload my files?
No, merging happens entirely in your browser.