CSV Merger

Combine files by matching header names, preserve a union of columns, preview the result, and download one merged CSV.

Choose two or more CSV/TSV files

0Files

0Data rows

0Union columns

ReadyStatus

How to use this CSV Merger

Merge multiple CSV files into one table in your browser. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.